Compare purchase prices or monthly rents on a consistent area basis, solve for any missing value, and export the current analysis to Excel.
Choose what to solve for in each property. The other two values remain editable.
Changes labels and interpretation; the math is the same.
Used in the results, chart, table, and workbook.
The selected result is calculated from the other two fields.
Enter the asking price or monthly rent.
Use consistent measured living area, not lot size.
Calculated in the selected area unit.
$207.14 per sq ft
Used in the results, chart, table, and workbook.
The selected result is calculated from the other two fields.
Enter the asking price or monthly rent.
Use consistent measured living area, not lot size.
Calculated in the selected area unit.
$258.33 per sq ft
Used in the results, chart, table, and workbook.
The selected result is calculated from the other two fields.
Enter the asking price or monthly rent.
Use consistent measured living area, not lot size.
Calculated in the selected area unit.
$166.67 per sq ft
All properties are normalized to square feet for comparison.
Best value by area
$166.67 per sq ft
Highest rate
$258.33
Property 2 per sq ft
Rate spread
$91.67
Highest minus lowest
Weighted average
$200.00
Total price divided by total area
Best-value discount
16.67%
Below weighted average
Bars compare each active property in dollars per square foot, even when an input uses square meters.
Property 3 has the lowest normalized rate. Property 2 is 55.00% higher per square foot.
The premium column measures how far each property sits above the lowest normalized rate.
| Property | Total price / rent | Entered area | Area in sq ft | Rate in selected unit | Normalized $/sq ft | Premium vs best |
|---|
Price per square foot is a screening metric, not a complete valuation. Condition, location, lot characteristics, taxes, fees, and usable layout can materially change the economic comparison.
Price per square foot converts a total purchase price or monthly rent into a consistent unit cost. The basic formula is total price ÷ floor area. It is especially useful when two homes have different sizes: the larger home may cost more in total but less for each square foot of usable space. This calculator also normalizes square-meter entries to square feet so mixed-unit listings can be compared without manual conversion.
Comparison type determines whether the analysis describes a purchase price or monthly rent. It does not change the division formula. For purchases, enter the current asking price or the price you are evaluating. For rentals, enter one month of base rent and keep treatment of utilities, parking, concessions, and mandatory fees consistent across all properties.
Properties to compare lets you include up to three alternatives. Property 1 always remains active. Turning Property 2 or Property 3 off removes it from the results, chart, comparison table, and Excel workbook. This is useful when narrowing a shortlist or checking one property in isolation.
Property name is an optional label. Use a short address, unit number, neighborhood, or listing nickname. A blank name is replaced by a neutral property number in calculations and exports.
Solve for makes the calculator work in three directions. Choose “Price per area” when total price and floor area are known. Choose “Total price or rent” when you know area and a target market rate, which can help frame an asking price or rent. Choose “Area” when a total price and unit rate are known. The selected output becomes read-only, while the other two fields remain editable.
Total price or rent is the full dollar amount used in the numerator. Avoid mixing a net effective rent for one property with a face rent for another. For sale comparisons, decide whether all entries exclude closing costs and immediate renovation budgets or whether all include them. Consistency matters more than the convention chosen.
Floor area is the measured living area, not the lot size. Select square feet or square meters. Changing the unit converts both the displayed area and the price-per-area field, so the underlying property economics remain unchanged. Measurement definitions can differ by market and property type. The Fannie Mae Selling Guide discusses subject-property data and measurement expectations used in many U.S. mortgage appraisals.
Price per area is the unit cost in the selected area unit. A lower rate generally means more floor area for each dollar, but not necessarily a better property. This field can be the result or an input. When used as an input, enter the market benchmark you want the property to match.
Best value by area identifies the active property with the lowest normalized cost per square foot. When only one valid property is active, it is shown as the sole comparison rather than implying a competitive ranking. A zero or blank result means the required inputs are missing or not mathematically usable.
Highest rate shows the most expensive property on a normalized area basis. Rate spread is the dollar difference between the highest and lowest rates. A small spread suggests the alternatives are similarly priced by size; a large spread is a prompt to investigate location, condition, amenities, renovation quality, building services, or data quality.
Weighted average divides the combined price of valid active properties by their combined square footage. Larger properties therefore influence this figure more than smaller ones. The best-value discount shows how far the lowest rate sits below that weighted average. It can be negative only if inconsistent or invalid data reaches the model; the calculator prevents that state.
The bar chart uses normalized dollars per square foot. Its legend shows the exact rate and each property’s premium above the best rate. The comparison table adds entered units, converted square feet, and the selected-unit rate. The same model feeds the chart, table, result cards, screen-reader su mmary, and Excel export.
A high price per square foot can reflect a superior micro-location, smaller but more efficient layout, newer construction, views, amenities, or scarcity. A low value can indicate a genuine bargain, but it can also signal deferred maintenance, undesirable space, unusual ownership restrictions, high recurring charges, or an inaccurate area figure. The U.S. Department of Housing and Urban Development offers broader homebuying guidance that can complement a unit-price screen.
For rentals, compare the same rent concept and time period. A concession such as one free month can be converted to net effective monthly rent, but apply the adjustment to every property. For purchases, compare similar property types and recent market context. The U.S. Census Bureau’s Housing Vacancy Survey provides national and regional housing-market context, although it does not replace local comparable-sales analysis.
Use price per square foot as an efficient first-pass filter. Then assess total affordability, financing, condition, operating costs, layout utility, neighborhood quality, resale liquidity, and legal or appraisal documentation. The calculator is educational and does not provide financial, legal, tax, appraisal, or investment advice.
