Turning a price into a rate
A headline price tells you what a home costs, but not whether that cost is reasonable for the space you get. Price per square foot fixes that by dividing the price by the interior living area, restating the figure as a rate. Because the rate is the same regardless of how large the home is, it lets you set a sprawling house and a compact one side by side and ask the same question of both. That is why it is the first number most buyers, agents, and appraisers reach for when sizing up a listing.
The formula
Price per square foot = Price ÷ Square feet
Price = Price per square foot × Square feet
The first form turns a price into a comparable rate; the second rearranges it to estimate value from a local rate. A 2,000-square-foot home at 250 per square foot, for instance, implies a value of about 500,000.
Worked example
Take a home listed at $450,000 with 2,000 square feet of interior living space. Turning that price into a rate takes one division:
| Step | Amount |
|---|---|
| Listing price | $450,000 |
| ÷ Interior areafinished living space — make sure any comps count area the same way | 2,000 sq ft |
| = Price per square footcompare this rate against recent sales of similar homes nearby | $225.00 |
Computed with this calculator's default settings — open the tool above and you'll see the same numbers, then swap in the price and area of any listing you're weighing up.
How the figure is used — and where it falls short
In practice, buyers use price per square foot to sanity-check whether a price is fair, while appraisers and agents lean on it to compare a listing against recent sales — the comparables, or comps — in the same area. Pulling the rate for nearby homes that have sold quickly reveals listings that look over- or underpriced relative to the local market.
Its limits matter just as much. The measure ignores lot size, condition, finishes, layout, age, and the quality of the location, so a figure that sits above or below the comps can be entirely justified. And what counts as square footage is not standard — finished versus total area, whether basements or garages are included — so a difference between two rates can be a difference in measurement rather than value. Always compare like with like.
- It normalises for size. The rate removes the effect of square footage, so homes of different sizes become directly comparable.
- It is a check, not a valuation. A price per square foot flags whether a listing is in line with its neighbourhood; it does not account for condition, finishes, or location quality.
- It only works on like-for-like area. Compare rates built on the same definition of square footage, or the comparison breaks down.
Knowing the local rate is one piece of the picture; the next is what you can actually afford to pay for it. Pair this with ourhome affordability calculatorto translate a budget into a price range, and ourmortgage calculatorto see what the monthly cost of that price would be.
Frequently asked questions
What is price per square foot?
Price per square foot is a property’s price divided by its interior living area. It restates a home’s cost as a rate — dollars for every square foot of space — which strips out the effect of size and lets you compare homes that are quite different in scale. Because it normalises for size, it is the quickest single number for judging whether a listing is roughly in line with the rest of its neighbourhood.
How do you calculate price per square foot?
Divide the price by the interior square footage: price ÷ square feet. A 2,000-square-foot home listed at 500,000 works out to 250 per square foot. You can rearrange the same relationship to estimate value the other way around — price equals price per square foot multiplied by square feet — so a local rate of 250 applied to 2,000 square feet implies a value of about 500,000.
Is a lower price per square foot always better?
No. A lower figure can mean genuine value, but it can equally reflect an older home, a poorer location, dated finishes, an awkward layout, or a small lot. Price per square foot says nothing about condition or quality, so a home priced below the local rate may simply be worth less for good reasons. Treat a low number as a prompt to look closer, not as proof of a bargain.
What counts as square footage?
It varies, which is exactly why the measure can mislead. Some figures count only finished, heated living space; others include basements, garages, or unfinished areas. Listings, tax records, and appraisals do not always agree. When you compare homes you should make sure each price per square foot is built on the same definition of area, or you will be comparing rates that are not really alike.
How do I use price per square foot to compare homes?
Gather the figure for recent sales of similar homes in the same area — the comparables, or comps — and see where a listing sits against that range. A price well above the local rate needs justifying by superior condition, finishes, lot, or location; a price well below invites the question of what is missing. Used this way it is a sanity check on a price rather than a valuation in its own right.
Disclaimer: This calculator is foreducation and illustration only. Price per square foot is a rough comparison tool that ignores condition, finishes, lot, layout, and location, and the figures it produces are not appraisals of any specific property. Nothing here is financial, real-estate, or investment advice.