Free calculator
Rent per square foot calculator
Compare rents across units of different sizes. Divide rent by area to get rent per square foot, shown per month and per year. Enter monthly rent for homes and apartments, or annual rent for commercial quotes.
The short answer
Last updated: July 2026
How do I calculate rent per square foot?
Rent per square foot is monthly rent divided by a unit’s living area. It puts units of different sizes on the same footing so you can compare pricing. A $2,600 unit at 1,100 square feet rents for about $2.36 per square foot a month, or $28.36 a year. This estimate uses your inputs.
After the estimate:
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Compare rents on a per-square-foot basis.
Divide rent by area to compare units of different sizes on the same footing. Enter monthly rent (typical for apartments and homes) or annual rent (typical for commercial leases).
Rent is quoted
Per month
Per year
Monthly rent
$
Area
sq ft
Use the same basis for every unit you compare — for homes, usually finished living area; for commercial space, the rentable or usable area the lease quotes.
Input-driven result
Your inputs
Formula
Result below
Rent per square foot (monthly)
$2.36
Rent per square foot (annual)
$28.36
Show the math
1. $2,600.00 monthly rent ÷ 1,100 sq ft = $2.36 per sq ft per month.
2. $2,600.00 × 12 = $31,200.00 annual rent.
3. $31,200.00 ÷ 1,100 sq ft = $28.36 per sq ft per year.
Estimate based on your inputs. Not a promise of results.
Estimate only. Rent per square foot depends on how the area is measured and what's included (utilities, parking, operating-expense pass-throughs), so it's most useful comparing similar spaces in the same market.
How it works
How this tool works.
Rent per square foot is the simplest way to compare units that aren’t the same size. A larger unit almost always rents for more in total, but not always more per square foot — and that per-foot figure is what tells you whether a rent is aggressive or soft relative to the space.
Enter the rent — monthly, as residential listings quote it, or annual, as commercial leases usually do — and the area. The calculator returns rent per square foot for the month and the year and shows each step with your numbers. It’s arithmetic on your inputs, most useful comparing similar units in the same market.
Make the result useful
rent density
Rent per square foot normalizes monthly rent by documented living area. It is useful for comparing otherwise similar rental units, but only when each area figure uses the same finished-space definition and each rent figure treats utilities, parking, concessions, and furnished space consistently.
Use several dated rental comparables rather than turning one ratio into “market rent.” Location, condition, layout, lease timing, included services, and current demand remain outside the formula. Record those differences before selecting an asking or renewal rent.
Calculation lens
monthly rent ÷ documented square feet
Read the result as a planning measure for the selected period.
It does not determine market or lawful rent.
Questions landlords ask
Questions about this tool and its limits.
Built by a landlord who's done every one of these jobs by hand.
Aptoria was built by an owner-operator managing a Brooklyn portfolio — the 11pm calls, the awkward rent texts, the April receipt-pile — not by a software team guessing at the problem.
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