{"product_id":"gmroi","title":"GMROI Calculator — Gross Margin Return on Investment","description":"\u003cstyle\u003e\n.gmroi-calculator {\n  --ink: #0f172a;\n  --muted: #475569;\n  --border: #e2e8f0;\n  --surface: #ffffff;\n  --tint: #f8fafc;\n  --primary: #1d4ed8;\n  --accent: #c2410c;\n  --accent-hover: #9a3412;\n  --chart-1: #1e40af;\n  --chart-2: #0d9488;\n  --chart-3: #7c3aed;\n  --chart-4: #be185d;\n  --chart-5: #334155;\n  width: 100%;\n  max-width: 1200px;\n  margin: 0 auto;\n  color: var(--ink);\n  background: var(--surface);\n  font-family: -apple-system, BlinkMacSystemFont, \"Segoe UI\", Roboto, Helvetica, Arial, sans-serif;\n  font-size: 15px;\n  line-height: 1.55;\n  container-type: inline-size;\n}\n.gmroi-calculator,\n.gmroi-calculator *,\n.gmroi-calculator *::before,\n.gmroi-calculator *::after {\n  box-sizing: border-box;\n}\n.gmroi-calculator a {\n  color: var(--primary);\n  text-decoration-thickness: 1px;\n  text-underline-offset: 2px;\n}\n.gmroi-calculator a:hover {\n  text-decoration-thickness: 2px;\n}\n.gmroi-calculator button,\n.gmroi-calculator input {\n  font: inherit;\n}\n.gmroi-calculator button,\n.gmroi-calculator input,\n.gmroi-calculator a {\n  -webkit-tap-highlight-color: transparent;\n}\n.gmroi-calculator button:focus-visible,\n.gmroi-calculator input:focus-visible,\n.gmroi-calculator a:focus-visible {\n  outline: 3px solid rgba(29, 78, 216, .35);\n  outline-offset: 2px;\n}\n.gmroi-header,\n.gmroi-toolbar,\n.gmroi-workspace,\n.gmroi-chart-card,\n.gmroi-table-card,\n.gmroi-education {\n  min-width: 0;\n}\n.gmroi-header {\n  padding: 24px;\n  border: 1px solid var(--border);\n  border-radius: 8px 8px 0 0;\n  background: linear-gradient(180deg, #ffffff 0%, var(--tint) 100%);\n}\n.gmroi-header h2 {\n  margin: 0;\n  font-size: 24px;\n  line-height: 1.25;\n  font-weight: 700;\n  letter-spacing: -.02em;\n}\n.gmroi-subtitle {\n  margin: 8px 0 0;\n  color: var(--muted);\n  max-width: 760px;\n}\n.gmroi-pills {\n  display: flex;\n  flex-wrap: wrap;\n  gap: 8px;\n  margin-top: 16px;\n}\n.gmroi-pill {\n  display: inline-flex;\n  align-items: center;\n  gap: 6px;\n  min-width: 0;\n  padding: 6px 10px;\n  border: 1px solid var(--border);\n  border-radius: 999px;\n  background: var(--surface);\n  color: var(--muted);\n  font-size: 13px;\n  font-weight: 500;\n}\n.gmroi-pill strong {\n  color: var(--ink);\n  font-variant-numeric: tabular-nums;\n}\n.gmroi-toolbar {\n  display: flex;\n  flex-wrap: wrap;\n  align-items: center;\n  gap: 8px;\n  padding: 16px 24px;\n  border-inline: 1px solid var(--border);\n  border-bottom: 1px solid var(--border);\n  background: var(--surface);\n}\n.gmroi-button {\n  min-height: 44px;\n  border: 1px solid transparent;\n  border-radius: 6px;\n  padding: 10px 16px;\n  cursor: pointer;\n  font-weight: 650;\n  line-height: 1.2;\n  transition: background-color .16s ease, border-color .16s ease, box-shadow .16s ease, transform .08s ease;\n}\n.gmroi-button:active {\n  transform: translateY(1px);\n}\n.gmroi-download {\n  display: inline-flex;\n  align-items: center;\n  gap: 10px;\n  padding: 12px 18px;\n  color: #ffffff;\n  background: var(--accent);\n  border-color: var(--accent);\n  box-shadow: 0 1px 2px rgba(15, 23, 42, .10);\n  white-space: nowrap;\n}\n.gmroi-download:hover {\n  background: var(--accent-hover);\n  border-color: var(--accent-hover);\n  box-shadow: 0 3px 8px rgba(15, 23, 42, .14);\n}\n.gmroi-download-icon {\n  width: 18px;\n  height: 18px;\n  flex: 0 0 18px;\n}\n.gmroi-reset {\n  color: var(--ink);\n  background: var(--surface);\n  border-color: #cbd5e1;\n}\n.gmroi-reset:hover {\n  background: var(--tint);\n  border-color: #94a3b8;\n}\n.gmroi-workspace {\n  display: grid;\n  grid-template-columns: minmax(0, 1fr);\n  gap: 16px;\n  padding: 24px;\n  border-inline: 1px solid var(--border);\n  background: var(--tint);\n}\n.gmroi-panel {\n  min-width: 0;\n  padding: 20px;\n  border: 1px solid var(--border);\n  border-radius: 8px;\n  background: var(--surface);\n  box-shadow: 0 1px 2px rgba(15, 23, 42, .06);\n}\n.gmroi-panel h3,\n.gmroi-chart-card h3,\n.gmroi-table-card h3,\n.gmroi-education h2 {\n  margin: 0;\n  font-size: 18px;\n  line-height: 1.35;\n  font-weight: 650;\n}\n.gmroi-panel-intro,\n.gmroi-chart-intro,\n.gmroi-table-intro {\n  margin: 6px 0 0;\n  color: var(--muted);\n  font-size: 13px;\n}\n.gmroi-fields {\n  display: grid;\n  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));\n  gap: 16px;\n  margin-top: 20px;\n}\n.gmroi-field {\n  display: flex;\n  min-width: 0;\n  flex-direction: column;\n}\n.gmroi-field label {\n  display: block;\n  margin-bottom: 6px;\n  color: var(--ink);\n  font-size: 14px;\n  font-weight: 600;\n}\n.gmroi-input-wrap {\n  position: relative;\n  min-width: 0;\n}\n.gmroi-input-prefix {\n  position: absolute;\n  inset: 50% auto auto 12px;\n  transform: translateY(-50%);\n  color: #64748b;\n  pointer-events: none;\n  font-weight: 600;\n}\n.gmroi-input {\n  width: 100%;\n  min-width: 0;\n  min-height: 44px;\n  padding: 10px 12px 10px 30px;\n  border: 1px solid #cbd5e1;\n  border-radius: 6px;\n  color: var(--ink);\n  background: var(--surface);\n  font-variant-numeric: tabular-nums;\n}\n.gmroi-input:hover {\n  border-color: #94a3b8;\n}\n.gmroi-input[aria-invalid=\"true\"] {\n  border-color: #b91c1c;\n  box-shadow: 0 0 0 1px #b91c1c;\n}\n.gmroi-helper {\n  min-height: 40px;\n  margin: 6px 0 0;\n  color: var(--muted);\n  font-size: 13px;\n  font-weight: 500;\n  line-height: 1.45;\n}\n.gmroi-error {\n  min-height: 19px;\n  margin: 4px 0 0;\n  color: #991b1b;\n  font-size: 13px;\n  font-weight: 600;\n}\n.gmroi-formula {\n  margin-top: 16px;\n  padding: 12px;\n  border: 1px solid #bfdbfe;\n  border-radius: 6px;\n  background: #eff6ff;\n  color: #1e3a8a;\n  font-size: 13px;\n}\n.gmroi-results {\n  display: grid;\n  align-content: start;\n  gap: 12px;\n}\n.gmroi-primary-result {\n  padding: 18px;\n  border: 1px solid #bfdbfe;\n  border-radius: 8px;\n  background: #eff6ff;\n}\n.gmroi-result-label {\n  color: #334155;\n  font-size: 13px;\n  font-weight: 600;\n}\n.gmroi-result-value {\n  margin-top: 4px;\n  color: #1e3a8a;\n  font-size: 30px;\n  line-height: 1.15;\n  font-weight: 700;\n  font-variant-numeric: tabular-nums;\n  overflow-wrap: anywhere;\n}\n.gmroi-result-caption {\n  margin: 8px 0 0;\n  color: #334155;\n  font-size: 13px;\n}\n.gmroi-result-grid {\n  display: grid;\n  grid-template-columns: repeat(auto-fit, minmax(145px, 1fr));\n  gap: 12px;\n}\n.gmroi-result-card {\n  min-width: 0;\n  padding: 14px;\n  border: 1px solid var(--border);\n  border-radius: 8px;\n  background: var(--surface);\n}\n.gmroi-card-label {\n  color: var(--muted);\n  font-size: 13px;\n  font-weight: 600;\n}\n.gmroi-card-value {\n  margin-top: 4px;\n  font-size: 20px;\n  line-height: 1.25;\n  font-weight: 700;\n  font-variant-numeric: tabular-nums;\n  overflow-wrap: anywhere;\n}\n.gmroi-status {\n  padding: 12px;\n  border: 1px solid var(--border);\n  border-radius: 6px;\n  background: var(--tint);\n  color: var(--muted);\n  font-size: 13px;\n}\n.gmroi-status strong {\n  color: var(--ink);\n}\n.gmroi-section-stack {\n  display: grid;\n  gap: 16px;\n  padding: 0 24px 24px;\n  border-inline: 1px solid var(--border);\n  background: var(--tint);\n}\n.gmroi-chart-card,\n.gmroi-table-card {\n  padding: 20px;\n  border: 1px solid var(--border);\n  border-radius: 8px;\n  background: var(--surface);\n  box-shadow: 0 1px 2px rgba(15, 23, 42, .06);\n}\n.gmroi-chart-cluster {\n  display: grid;\n  grid-template-columns: minmax(0, 1fr);\n  align-items: center;\n  justify-content: center;\n  gap: 20px;\n  max-width: 920px;\n  margin: 20px auto 0;\n}\n.gmroi-chart-visual {\n  display: flex;\n  min-width: 0;\n  justify-content: center;\n  align-items: center;\n}\n.gmroi-chart-svg {\n  display: block;\n  width: 100%;\n  max-width: 560px;\n  height: auto;\n  min-height: 260px;\n}\n.gmroi-chart-svg text {\n  fill: #475569;\n  font-size: 13px;\n  font-family: -apple-system, BlinkMacSystemFont, \"Segoe UI\", Roboto, Helvetica, Arial, sans-serif;\n}\n.gmroi-chart-empty {\n  display: none;\n  width: 100%;\n  max-width: 520px;\n  padding: 20px;\n  border: 1px dashed #94a3b8;\n  border-radius: 6px;\n  color: var(--muted);\n  background: var(--tint);\n  text-align: center;\n  font-size: 13px;\n}\n.gmroi-chart-side {\n  display: grid;\n  min-width: 0;\n  gap: 16px;\n  align-content: center;\n}\n.gmroi-legend {\n  display: grid;\n  gap: 10px;\n  min-width: 0;\n}\n.gmroi-legend-row {\n  display: grid;\n  grid-template-columns: 12px minmax(0, auto) auto;\n  justify-content: start;\n  align-items: center;\n  column-gap: 10px;\n  row-gap: 4px;\n  min-width: 0;\n  font-size: 13px;\n}\n.gmroi-legend-swatch {\n  width: 12px;\n  height: 12px;\n  border-radius: 3px;\n}\n.gmroi-legend-name {\n  min-width: 0;\n  color: var(--muted);\n  overflow-wrap: anywhere;\n}\n.gmroi-legend-value {\n  color: var(--ink);\n  font-weight: 700;\n  font-variant-numeric: tabular-nums;\n  white-space: nowrap;\n}\n.gmroi-chart-caption {\n  margin-top: 16px;\n  padding: 10px 12px;\n  border: 1px solid var(--border);\n  border-radius: 6px;\n  background: var(--tint);\n  color: var(--muted);\n  font-size: 13px;\n}\n.gmroi-chart-summary {\n  margin-top: 16px;\n}\n.gmroi-overflow {\n  width: 100%;\n  max-width: 100%;\n  overflow-x: auto;\n  margin-top: 16px;\n  border: 1px solid var(--border);\n  border-radius: 6px;\n}\n.gmroi-table {\n  width: 100%;\n  min-width: 640px;\n  border-collapse: collapse;\n  font-size: 13px;\n  font-variant-numeric: tabular-nums;\n}\n.gmroi-table th,\n.gmroi-table td {\n  padding: 10px 12px;\n  border-bottom: 1px solid var(--border);\n  text-align: right;\n  vertical-align: middle;\n}\n.gmroi-table th:first-child,\n.gmroi-table td:first-child {\n  text-align: left;\n}\n.gmroi-table th {\n  color: #ffffff;\n  background: #1e3a8a;\n  font-weight: 650;\n  white-space: nowrap;\n}\n.gmroi-table tbody tr:last-child td {\n  border-bottom: 0;\n}\n.gmroi-table tbody tr:hover td {\n  background: #f8fafc;\n}\n.gmroi-table-note {\n  margin-top: 16px;\n  padding: 10px 12px;\n  border: 1px solid var(--border);\n  border-radius: 6px;\n  background: var(--tint);\n  color: var(--muted);\n  font-size: 13px;\n}\n.gmroi-safe-chart-stack .gmroi-chart-cluster {\n  grid-template-columns: minmax(0, 1fr) !important;\n  gap: 24px !important;\n}\n.gmroi-safe-chart-stack .gmroi-chart-side {\n  margin-top: 0 !important;\n}\n.gmroi-safe-chart-stack .gmroi-chart-caption {\n  margin-top: 20px !important;\n}\n.gmroi-safe-table-stack .gmroi-overflow {\n  height: auto !important;\n  max-height: none !important;\n}\n.gmroi-safe-table-stack .gmroi-table-note {\n  margin-top: 20px !important;\n}\n.gmroi-education {\n  padding: 28px 24px 8px;\n  border: 1px solid var(--border);\n  border-top: 0;\n  border-radius: 0 0 8px 8px;\n  background: var(--surface);\n}\n.gmroi-education-section {\n  max-width: 900px;\n  margin: 0 auto 28px;\n}\n.gmroi-education h2 {\n  margin-bottom: 10px;\n}\n.gmroi-education h3 {\n  margin: 18px 0 6px;\n  font-size: 16px;\n  line-height: 1.4;\n  font-weight: 650;\n}\n.gmroi-education p,\n.gmroi-education ul {\n  margin: 0 0 12px;\n  color: #334155;\n}\n.gmroi-education ul {\n  padding-left: 20px;\n}\n.gmroi-education li + li {\n  margin-top: 6px;\n}\n.gmroi-equation {\n  margin: 12px 0;\n  padding: 14px;\n  border-left: 4px solid var(--primary);\n  border-radius: 0 6px 6px 0;\n  background: #eff6ff;\n  color: #1e3a8a;\n  font-weight: 650;\n  font-variant-numeric: tabular-nums;\n}\n@container (min-width: 640px) {\n  .gmroi-chart-cluster {\n    grid-template-columns: minmax(300px, 560px) minmax(220px, 300px);\n    gap: 24px;\n  }\n}\n@container (min-width: 900px) {\n  .gmroi-workspace {\n    grid-template-columns: minmax(0, 1.08fr) minmax(320px, .92fr);\n  }\n}\n@container (max-width: 639px) {\n  .gmroi-header,\n  .gmroi-toolbar,\n  .gmroi-workspace,\n  .gmroi-section-stack,\n  .gmroi-education {\n    padding-left: 16px;\n    padding-right: 16px;\n  }\n  .gmroi-panel,\n  .gmroi-chart-card,\n  .gmroi-table-card {\n    padding: 16px;\n  }\n  .gmroi-fields {\n    grid-template-columns: minmax(0, 1fr);\n  }\n  .gmroi-result-grid {\n    grid-template-columns: minmax(0, 1fr);\n  }\n  .gmroi-chart-svg {\n    min-height: 230px;\n  }\n}\n@container (max-width: 360px) {\n  .gmroi-table-note,\n  .gmroi-chart-caption {\n    margin-top: 12px;\n  }\n}\n@media (max-width: 639px) {\n  .gmroi-header,\n  .gmroi-toolbar,\n  .gmroi-workspace,\n  .gmroi-section-stack,\n  .gmroi-education {\n    padding-left: 16px;\n    padding-right: 16px;\n  }\n}\n\u003c\/style\u003e\n\u003cdiv class=\"gmroi-calculator\" data-calculator-root\u003e\n  \u003csection class=\"gmroi-header\"\u003e\n    \u003ch2\u003eGMROI Calculator\u003c\/h2\u003e\n    \u003cp class=\"gmroi-subtitle\"\u003eMeasure how many dollars of gross profit your inventory investment produces, with a live efficiency view and downloadable Excel workbook.\u003c\/p\u003e\n    \u003cdiv class=\"gmroi-pills\" aria-label=\"Live GMROI summary\"\u003e\n      \u003cspan class=\"gmroi-pill\"\u003eAverage inventory \u003cstrong class=\"gmroi-pill-average\"\u003e$50,000.00\u003c\/strong\u003e\u003c\/span\u003e\n      \u003cspan class=\"gmroi-pill\"\u003eGMROI \u003cstrong class=\"gmroi-pill-ratio\"\u003e3.00\u003c\/strong\u003e\u003c\/span\u003e\n      \u003cspan class=\"gmroi-pill\"\u003eReturn \u003cstrong class=\"gmroi-pill-percent\"\u003e300.00%\u003c\/strong\u003e\u003c\/span\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\n  \u003cdiv class=\"gmroi-toolbar\" role=\"toolbar\" aria-label=\"Calculator actions\"\u003e\n    \u003cbutton class=\"gmroi-button gmroi-download\" type=\"button\"\u003e\n      \u003csvg class=\"gmroi-download-icon\" viewbox=\"0 0 24 24\" aria-hidden=\"true\"\u003e\n        \u003cpath d=\"M12 3v11m0 0 4-4m-4 4-4-4M5 17v3h14v-3\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\n      \u003c\/svg\u003e\n      \u003cspan\u003eDownload Excel\u003c\/span\u003e\n    \u003c\/button\u003e\n    \u003cbutton class=\"gmroi-button gmroi-reset\" type=\"button\"\u003eReset\u003c\/button\u003e\n  \u003c\/div\u003e\n\n  \u003csection class=\"gmroi-workspace\"\u003e\n    \u003cdiv class=\"gmroi-panel gmroi-input-panel\"\u003e\n      \u003ch3\u003eInventory and profit inputs\u003c\/h3\u003e\n      \u003cp class=\"gmroi-panel-intro\"\u003eUse inventory costs from the beginning and end of the same reporting period, plus gross profit for that period.\u003c\/p\u003e\n      \u003cdiv class=\"gmroi-fields\"\u003e\n        \u003cdiv class=\"gmroi-field\"\u003e\n          \u003clabel for=\"gmroi-starting-inventory\"\u003eStarting inventory cost\u003c\/label\u003e\n          \u003cdiv class=\"gmroi-input-wrap\"\u003e\n            \u003cspan class=\"gmroi-input-prefix\" aria-hidden=\"true\"\u003e$\u003c\/span\u003e\n            \u003cinput class=\"gmroi-input\" id=\"gmroi-starting-inventory\" name=\"gmroi-starting-inventory\" type=\"text\" inputmode=\"decimal\" value=\"60,000.00\" aria-describedby=\"gmroi-starting-help gmroi-starting-error\"\u003e\n          \u003c\/div\u003e\n          \u003cp class=\"gmroi-helper\" id=\"gmroi-starting-help\"\u003eInventory carried at cost at the start of the period.\u003c\/p\u003e\n          \u003cp class=\"gmroi-error\" id=\"gmroi-starting-error\" aria-live=\"polite\"\u003e\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"gmroi-field\"\u003e\n          \u003clabel for=\"gmroi-final-inventory\"\u003eFinal inventory cost\u003c\/label\u003e\n          \u003cdiv class=\"gmroi-input-wrap\"\u003e\n            \u003cspan class=\"gmroi-input-prefix\" aria-hidden=\"true\"\u003e$\u003c\/span\u003e\n            \u003cinput class=\"gmroi-input\" id=\"gmroi-final-inventory\" name=\"gmroi-final-inventory\" type=\"text\" inputmode=\"decimal\" value=\"40,000.00\" aria-describedby=\"gmroi-final-help gmroi-final-error\"\u003e\n          \u003c\/div\u003e\n          \u003cp class=\"gmroi-helper\" id=\"gmroi-final-help\"\u003eInventory carried at cost at the end of the same period.\u003c\/p\u003e\n          \u003cp class=\"gmroi-error\" id=\"gmroi-final-error\" aria-live=\"polite\"\u003e\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"gmroi-field\"\u003e\n          \u003clabel for=\"gmroi-gross-profit\"\u003eGross profit\u003c\/label\u003e\n          \u003cdiv class=\"gmroi-input-wrap\"\u003e\n            \u003cspan class=\"gmroi-input-prefix\" aria-hidden=\"true\"\u003e$\u003c\/span\u003e\n            \u003cinput class=\"gmroi-input\" id=\"gmroi-gross-profit\" name=\"gmroi-gross-profit\" type=\"text\" inputmode=\"decimal\" value=\"150,000.00\" aria-describedby=\"gmroi-profit-help gmroi-profit-error\"\u003e\n          \u003c\/div\u003e\n          \u003cp class=\"gmroi-helper\" id=\"gmroi-profit-help\"\u003eNet sales minus cost of goods sold for the period.\u003c\/p\u003e\n          \u003cp class=\"gmroi-error\" id=\"gmroi-profit-error\" aria-live=\"polite\"\u003e\u003c\/p\u003e\n        \u003c\/div\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"gmroi-formula\"\u003eAverage inventory cost = (starting inventory + final inventory) ÷ 2. GMROI = gross profit ÷ average inventory cost.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"gmroi-panel gmroi-results\" aria-label=\"GMROI results\"\u003e\n      \u003ch3\u003eLive results\u003c\/h3\u003e\n      \u003cdiv class=\"gmroi-primary-result\"\u003e\n        \u003cdiv class=\"gmroi-result-label\"\u003eGross margin return on inventory\u003c\/div\u003e\n        \u003cdiv class=\"gmroi-result-value gmroi-primary-value\"\u003e3.00\u003c\/div\u003e\n        \u003cp class=\"gmroi-result-caption gmroi-primary-caption\"\u003eThe business generates $3.00 of gross profit for each $1.00 invested in average inventory.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"gmroi-result-grid\"\u003e\n        \u003cdiv class=\"gmroi-result-card\"\u003e\n          \u003cdiv class=\"gmroi-card-label\"\u003eAverage inventory cost\u003c\/div\u003e\n          \u003cdiv class=\"gmroi-card-value gmroi-average-value\"\u003e$50,000.00\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"gmroi-result-card\"\u003e\n          \u003cdiv class=\"gmroi-card-label\"\u003eGMROI percentage\u003c\/div\u003e\n          \u003cdiv class=\"gmroi-card-value gmroi-percent-value\"\u003e300.00%\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"gmroi-result-card\"\u003e\n          \u003cdiv class=\"gmroi-card-label\"\u003eInventory change\u003c\/div\u003e\n          \u003cdiv class=\"gmroi-card-value gmroi-change-value\"\u003e-$20,000.00\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"gmroi-result-card\"\u003e\n          \u003cdiv class=\"gmroi-card-label\"\u003eGross profit surplus over inventory\u003c\/div\u003e\n          \u003cdiv class=\"gmroi-card-value gmroi-surplus-value\"\u003e$100,000.00\u003c\/div\u003e\n        \u003c\/div\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"gmroi-status\"\u003e\n\u003cstrong class=\"gmroi-status-title\"\u003eStrong return.\u003c\/strong\u003e \u003cspan class=\"gmroi-status-text\"\u003eGMROI is above 1.00, meaning gross profit exceeds the average inventory investment.\u003c\/span\u003e\n\u003c\/div\u003e\n      \u003cdiv class=\"gmroi-live\" aria-live=\"polite\" aria-atomic=\"true\"\u003eGMROI is 3.00 and average inventory is $50,000.00.\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\n  \u003cdiv class=\"gmroi-section-stack\"\u003e\n    \u003csection class=\"gmroi-chart-card\" data-chart-card\u003e\n      \u003ch3\u003eInventory efficiency comparison\u003c\/h3\u003e\n      \u003cp class=\"gmroi-chart-intro gmroi-chart-interpretation\"\u003eGross profit is 3.00 times average inventory cost in the current scenario.\u003c\/p\u003e\n      \u003cdiv class=\"gmroi-chart-cluster\"\u003e\n        \u003cdiv class=\"gmroi-chart-visual\"\u003e\n          \u003csvg class=\"gmroi-chart-svg\" viewbox=\"0 0 560 300\" role=\"img\" aria-label=\"Starting inventory, average inventory, final inventory, and gross profit values.\"\u003e\u003c\/svg\u003e\n          \u003cdiv class=\"gmroi-chart-empty\" role=\"status\"\u003eEnter positive values above to see the comparison.\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"gmroi-chart-side\"\u003e\n          \u003cdiv class=\"gmroi-legend\" aria-label=\"Chart legend\"\u003e\u003c\/div\u003e\n          \u003cdiv class=\"gmroi-chart-caption\"\u003eUse the relative bar heights to see whether gross profit meaningfully exceeds the capital tied up in inventory.\u003c\/div\u003e\n        \u003c\/div\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"gmroi-chart-summary\"\u003e\n        \u003cdiv class=\"gmroi-overflow\"\u003e\n          \u003ctable class=\"gmroi-table gmroi-chart-data-table\"\u003e\n            \u003cthead\u003e\n              \u003ctr\u003e\n\u003cth\u003eMeasure\u003c\/th\u003e\n\u003cth\u003eAmount\u003c\/th\u003e\n\u003cth\u003eRelative to average inventory\u003c\/th\u003e\n\u003c\/tr\u003e\n            \u003c\/thead\u003e\n            \u003ctbody class=\"gmroi-chart-data-body\"\u003e\u003c\/tbody\u003e\n          \u003c\/table\u003e\n        \u003c\/div\u003e\n      \u003c\/div\u003e\n    \u003c\/section\u003e\n\n    \u003csection class=\"gmroi-table-card\" data-table-card\u003e\n      \u003ch3\u003eGMROI sensitivity table\u003c\/h3\u003e\n      \u003cp class=\"gmroi-table-intro\"\u003eSee how the result changes when gross profit and average inventory move 20% below or above the current scenario.\u003c\/p\u003e\n      \u003cdiv class=\"gmroi-overflow\"\u003e\n        \u003ctable class=\"gmroi-table gmroi-sensitivity-table\"\u003e\n          \u003cthead\u003e\n            \u003ctr\u003e\n\u003cth\u003eScenario\u003c\/th\u003e\n\u003cth\u003eGross profit\u003c\/th\u003e\n\u003cth\u003eAverage inventory\u003c\/th\u003e\n\u003cth\u003eGMROI\u003c\/th\u003e\n\u003cth\u003eGMROI percentage\u003c\/th\u003e\n\u003c\/tr\u003e\n          \u003c\/thead\u003e\n          \u003ctbody class=\"gmroi-sensitivity-body\"\u003e\u003c\/tbody\u003e\n        \u003c\/table\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"gmroi-table-note\"\u003eSensitivity rows are directional planning cases, not forecasts. They isolate the arithmetic effect of changing profit and inventory while holding the rest of the operating model outside this calculator.\u003c\/div\u003e\n    \u003c\/section\u003e\n  \u003c\/div\u003e\n\n  \u003csection class=\"gmroi-education\"\u003e\n    \u003cdiv class=\"gmroi-education-section\"\u003e\n      \u003ch2\u003eWhat does this GMROI calculator estimate?\u003c\/h2\u003e\n      \u003cp\u003eGross margin return on inventory, commonly shortened to GMROI, measures how much gross profit a business generates for each dollar invested in average inventory. Retailers, wholesalers, distributors, and product-based companies use it to compare inventory productivity across periods, departments, categories, stores, or individual product lines. The calculator takes beginning inventory cost, ending inventory cost, and gross profit for one consistent reporting period. It then calculates average inventory, the GMROI ratio, and the same ratio expressed as a percentage.\u003c\/p\u003e\n      \u003cp\u003eGMROI is a profitability-efficiency measure rather than a complete measure of company profit. It does not deduct payroll, rent, marketing, interest, taxes, or other operating expenses. A strong GMROI can therefore coexist with weak net income, while a lower GMROI may still be acceptable for a category that attracts customers or supports other profitable sales.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"gmroi-education-section\"\u003e\n      \u003ch2\u003eHow should each input be entered?\u003c\/h2\u003e\n      \u003ch3\u003eStarting inventory cost\u003c\/h3\u003e\n      \u003cp\u003eEnter the inventory balance at cost at the beginning of the period. This input is required for a meaningful average. Use the accounting cost basis, not the expected retail selling price. A higher beginning balance usually increases average inventory and lowers GMROI when gross profit is unchanged. Common mistakes include mixing retail value with cost value, using inventory from a different entity, or selecting a date that does not align with the profit period.\u003c\/p\u003e\n      \u003ch3\u003eFinal inventory cost\u003c\/h3\u003e\n      \u003cp\u003eEnter ending inventory at cost for the same reporting period. It is also required. A larger ending balance raises average inventory and tends to reduce the ratio unless the inventory supports proportionally more gross profit. A falling ending balance is not automatically positive; it may reflect efficient sell-through, deliberate stock reduction, shortages, or under-ordering. Inventory valuation methods and accounting policies can affect reported balances. The \u003ca href=\"https:\/\/www.irs.gov\/publications\/p538\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eIRS guidance on accounting periods and methods\u003c\/a\u003e provides broader U.S. tax-accounting context.\u003c\/p\u003e\n      \u003ch3\u003eGross profit\u003c\/h3\u003e\n      \u003cp\u003eEnter net sales minus cost of goods sold for the same period covered by the inventory balances. Gross profit is required and should be entered before operating expenses. Higher gross profit increases GMROI directly. Verify that returns, discounts, allowances, and cost of goods sold are treated consistently. The \u003ca href=\"https:\/\/www.sec.gov\/about\/reports-publications\/investor-publications\/beginners-guide-to-financial-statements\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eSEC guide to financial statements\u003c\/a\u003e explains how income statements and balance sheets fit together.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"gmroi-education-section\"\u003e\n      \u003ch2\u003eHow is GMROI calculated?\u003c\/h2\u003e\n      \u003cdiv class=\"gmroi-equation\"\u003eAverage inventory cost = (starting inventory cost + final inventory cost) ÷ 2\u003c\/div\u003e\n      \u003cdiv class=\"gmroi-equation\"\u003eGMROI = gross profit ÷ average inventory cost\u003c\/div\u003e\n      \u003cp\u003eThe percentage output is the ratio multiplied by 100. A GMROI of 3.00 and 300.00% communicate the same economics: the period generated three dollars of gross profit per dollar of average inventory. When average inventory is zero, the ratio is undefined rather than infinite, so the calculator shows a neutral result and suppresses the chart. When gross profit is zero but inventory is positive, GMROI is 0.00.\u003c\/p\u003e\n      \u003cp\u003eThe beginning-and-ending average is a practical approximation. It may be less representative when inventory fluctuates sharply inside the period. A business with weekly or monthly records can calculate a more granular average using multiple snapshots. The \u003ca href=\"https:\/\/www.sba.gov\/business-guide\/manage-your-business\/manage-your-finances\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eU.S. Small Business Administration finance guidance\u003c\/a\u003e is a useful starting point for strengthening recordkeeping and financial controls.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"gmroi-education-section\"\u003e\n      \u003ch2\u003eHow should the results be interpreted?\u003c\/h2\u003e\n      \u003ch3\u003eAverage inventory cost\u003c\/h3\u003e\n      \u003cp\u003eThis is the denominator of GMROI and represents the approximate inventory capital employed during the period. A high value is not inherently bad if it supports adequate gross profit, service levels, or growth. Compare it with prior periods and similar categories rather than evaluating it alone.\u003c\/p\u003e\n      \u003ch3\u003eGMROI and GMROI percentage\u003c\/h3\u003e\n      \u003cp\u003eA ratio above 1.00 means gross profit is greater than average inventory cost for the measured period. A ratio below 1.00 means the period produced less gross profit than the average inventory investment, but the appropriate target depends on the period length, category economics, turnover rate, seasonality, and business model. Annual GMROI should not be compared directly with a one-month ratio without normalization. A negative result indicates negative gross profit and deserves immediate investigation.\u003c\/p\u003e\n      \u003ch3\u003eInventory change and gross profit surplus\u003c\/h3\u003e\n      \u003cp\u003eInventory change equals ending inventory minus beginning inventory. A positive number indicates inventory increased; a negative number indicates it declined. Gross profit surplus equals gross profit minus average inventory. It is a simple comparison amount, not operating income or cash flow, because inventory remains an asset and gross profit excludes operating expenses.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"gmroi-education-section\"\u003e\n      \u003ch2\u003eHow do the chart and sensitivity table help?\u003c\/h2\u003e\n      \u003cp\u003eThe bar chart compares beginning, average, and ending inventory with gross profit using one consistent dollar scale. It highlights the relative size of profit versus inventory investment, while the legend and supporting data table show exact values. The sensitivity table recalculates GMROI across nine combinations of gross profit and average inventory at 80%, 100%, and 120% of the current amounts. It shows the two main improvement paths: generate more gross profit from the same inventory, or support the same gross profit with less average inventory.\u003c\/p\u003e\n      \u003cp\u003eUse these scenarios as diagnostic prompts. More gross profit may come from pricing, product mix, lower purchase cost, fewer markdowns, or stronger sales. Lower inventory may come from better forecasting, replenishment, assortment discipline, vendor lead times, or clearance strategy. Each action has tradeoffs: reducing stock too aggressively can cause lost sales and weaker service levels. For a broader explanation of the metric and its limitations, see \u003ca href=\"https:\/\/www.investopedia.com\/terms\/g\/gmroi.asp\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eInvestopedia's GMROI overview\u003c\/a\u003e.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"gmroi-education-section\"\u003e\n      \u003ch2\u003eWhat common mistakes should be avoided?\u003c\/h2\u003e\n      \u003cul\u003e\n        \u003cli\u003eMixing inventory at retail value with gross profit based on cost accounting.\u003c\/li\u003e\n        \u003cli\u003eUsing gross sales instead of gross profit.\u003c\/li\u003e\n        \u003cli\u003eCombining inventory dates and profit figures from different reporting periods.\u003c\/li\u003e\n        \u003cli\u003eComparing monthly, quarterly, and annual GMROI without considering period length.\u003c\/li\u003e\n        \u003cli\u003eOptimizing the ratio in isolation while ignoring stockouts, customer experience, supplier constraints, and operating expenses.\u003c\/li\u003e\n        \u003cli\u003eAssuming a universal target applies to every product category or business model.\u003c\/li\u003e\n      \u003c\/ul\u003e\n      \u003cp\u003eGMROI is most useful as a consistent comparative measure. Track it over time, combine it with turnover, markdown rate, sell-through, contribution margin, and stock availability, and investigate the operational reasons behind changes instead of reacting to the ratio alone.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\u003c\/div\u003e","brand":"FinancialModelsLab","offers":[{"title":"Default Title","offer_id":49909483208947,"sku":"gmroi","price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0522\/6191\/2762\/files\/gmroi.webp?v=1783935420","url":"https:\/\/financialmodelslab.com\/products\/gmroi","provider":"Financial Models Lab","version":"1.0","type":"link"}