Price per Square Foot Calculator (sq ft and m²)
This price per square foot calculator turns price and area into USD per sq ft or m², with cents kept, the unit spelled out and sub-cent rates flagged.
What This Calculator Does
Enter a price and a positive area, pick square feet or square meters yourself, and you get the rate in USD per unit. Cents stay as typed. Up to four decimal places of area are kept before dividing. Changing the unit relabels your figure; it never converts it. The answer is plain arithmetic, not a measured or appraised value, and it lines up with other rates only when price and area rest on the same basis.
Who Is This For
Use it if you're buying, selling or working in real estate and need to weigh price-per-area figures in dollars. You supply everything: the price with its stated basis and the area with a documented definition. Nothing is fetched for you: no listings, no measurements, no comparable sales.
How It Works
Enter both figures and set the unit to whatever the area really uses. Before relying on the result, find out how that area was defined, what the price rests on and the date behind it. Then look at the rate, the unit and the sub-cent flag, if it appears. Changed something? Recalculate. Examples stay collapsed until opened, and they don't fill in or confirm any facts.
Frequently Asked Questions
What does the calculator actually compute?
Just the rate. Your price is divided by your area in whichever unit you selected. On screen you see the exact value, the unit, and a cent-rounded figure that reads "less than one cent" when the rate is that small. That exact value is arithmetic, not a fresh price. The full cost of buying, your mortgage payments and the returns an investment earns are outside its scope, and it isn't an appraisal.
Will picking m² instead of sq ft convert my area?
No. Switching only relabels the figure you typed, so the same number is read in the new unit and any earlier result is cleared. To describe the same physical space, enter or double-check the correct area figure for the new unit. A rate labeled per sq ft can't be compared directly with a rate per m².
How does it show cents and very small rates?
Any rate more than zero but less than US$0.01 per unit gets a sub-cent flag rather than a rounded figure. Example: US$0.09 divided by 10 units comes to US$0.009; standard rounding would make that US$0.01, yet the screen shows it as less than a cent. All other rates go to the nearest cent. A positive rate sitting exactly midway moves to the higher cent: US$10.01 ÷ 2 = US$5.005, shown as US$5.01. It's a presentation rule, not a fee anyone regulates.
Which area measure should I use?
The measure that fits what you're comparing, used the same way for all the properties on your list. Living space, a building's gross area, rentable space and lot size are measured differently. Each gives its own price per square foot. The tool won't test a figure against any measurement standard, and it doesn't limit the count to interior space. If the definition behind a figure is unclear, ask for the document that sets it out.
Is the property with the lower rate the better buy?
Not by itself. What the price is based on, the date the price applies to, how the area is defined and in which unit all matter. Location, condition and floor weigh in too. So do amenities and any other difference between properties. Line up similar properties whose prices share a basis. The tool carries no comparables, no market benchmark and no fair-value prediction, and the figure approves neither a purchase nor a loan.
Do the input limits reflect market or lender rules?
No, they only mark what the software can handle. Price must be a positive USD amount, cents included, up to US$2 billion; area must be positive and no more than 2 billion of the chosen unit, with up to four decimal places. Neither range confirms a quote, a physical measurement or whether a figure is plausible on the market. The rate per unit can exceed the price cap, and it is never quietly trimmed to fit.
What if an input is missing or invalid?
No result appears until the entry is valid. Blank price, area or unit fields never get a default of zero, a single square foot or a guess. Fix negative values, extra decimal places or commas in the wrong spot, and only then does a result show. A tiny area that is still valid gives a result above zero, and the exported figure stays above zero as well. Edit any entry and the earlier result goes stale.
What can you take from the reference date and the sources?
A fixed point for the arithmetic, nothing more. Pinned to September 30, 2026, the baseline isn't a live listing, a forecast of the market or a verified measurement. Neither the measurement standard nor the unit conversion has a confirmed or linked source. Hold the price and the area definition up against their original documents. The report sets out the method and where it stops; it is not an official value and not a measurement certificate.