Price per Square Foot Calculator
Turn a price and an area into a USD rate per sq ft or per m², with cents intact, the unit always labeled, and rates below one cent shown in full.
What This Calculator Does
You get a rate in USD per unit: a price divided by a positive area. The unit is your call, since nothing assumes square feet or square meters. Cents stay exactly as typed. The area keeps up to four decimals until the division runs. Switching the unit relabels your number; it doesn't convert it. Pair a price and an area only when their bases match, and read the result as plain math, not a measurement or an official valuation.
Who Is This For
It's built for buyers, sellers and real estate pros who weigh price-per-area figures they already hold in U.S. dollars. Know what the price covers and how the area was documented, because the tool pulls no listings, measurements or comparables.
How It Works
Enter the price and the area, then pick the unit the area was really measured in. Before you trust the rate, check what the figures cover and how the area was defined, along with what kind of price it is and when it was set. Then read the rate, the unit shown and any flag for a rate below a cent. Changed something? Run it again. The examples sit folded until you open them, and they won't stand in for your numbers or vouch for them.
Frequently Asked Questions
What does this calculator actually compute?
A single figure. It's your price divided by your area, expressed in whichever unit you selected. The screen gives the exact value, then a cent-rounded version; a positive rate too small to round shows "less than one cent" instead. The unit sits beside it. That exact value is arithmetic, not a new asking price. It leaves out total purchase cost, mortgage payments and investment returns, and it doesn't value the property.
If I switch from sq ft to m², does my area get converted?
No. Your typed number stays put and is simply read in the new unit, which wipes the old result. Describing the same room or lot? Type the area figure that holds in the new unit, or verify the figure on hand. A per-sq-ft rate and a per-m² rate can't sit side by side as equals.
How does the calculator show cents and very small rates?
To the nearest cent, except for tiny rates. Anything above zero but under US$0.01 per unit shows as less than a cent: US$0.09 ÷ 10 gives US$0.009 per unit, which normal rounding would lift to US$0.01, yet the tool flags it instead. A positive rate sitting exactly on a half cent rounds up, so US$10.01 ÷ 2 = US$5.005 displays as US$5.01. That's a display choice, not a regulated charge.
Which area figure should I enter?
The definition that matches what you're comparing. Stick with it for every property in the set. Living area, the building's gross area, its rentable space and the land under it each measure something else, so each gives its own rate per unit of area. The tool doesn't test your figure against a measurement standard. Nor does it assume interior space only. Unsure how the area was defined? Ask for the document that spells it out.
Is a lower price per unit of area automatically a better deal?
Not on its own. What the price stands for and when it was set matter, and so do the area definition and the unit. Location and condition count. So do the floor, the amenities and anything else that sets properties apart. Compare similar properties priced on the same basis. The calculator carries no comparable sales and no market yardstick, and it won't predict a fair value. Its result doesn't clear you for a purchase or a loan.
Are the input limits market rules or lender rules?
No. They mark what the software can handle: a positive price in USD, cents included, up to US$2 billion, and a positive area up to 2 billion of your chosen unit with up to four decimals. Staying inside them doesn't prove a quote, a physical measurement or a realistic market figure. The rate per unit can come out above the price cap, and it is never trimmed quietly to fit.
What if an entry is blank or invalid?
Nothing gets guessed. Leave the price, the area or the unit empty and the tool waits; it won't plug in zero, one square foot or any stand-in figure. Negative numbers, too many decimals and badly grouped digits must be fixed before a result appears. A valid area, however tiny, still gives a result above zero, and the export keeps it above zero too. Edit any entry? The earlier result is out of date.
What does the reference date, with its source notes, establish?
Only that the arithmetic stays stable as of September 30, 2026. It isn't a live listing. It doesn't forecast the market or vouch for any measurement, either. No source for a measurement standard or for unit conversion has been confirmed or linked, so check the price and the area definition against the documents they came from. The report explains the method and its limits; it isn't an official value or a measurement certificate.