Price per Square Foot Calculator

Headline list prices say nothing without context. A $500,000 home in one neighborhood could be a tiny 800 sqft starter, a 2,500 sqft family house, or a 5,000 sqft estate, and the right comp depends entirely on which size you are buying. $/sqft normalizes by interior area, so a $200/sqft 1,500 sqft condo and a $200/sqft 3,000 sqft single-family are stating the same per-unit pricing, just at different absolute totals. That is why appraisers, agents, and Zillow's Zestimate all anchor on $/sqft when comping a property against recent neighborhood sales. The same logic carries to rent: $2,000/mo for a 600 sqft studio ($3.33/sqft/mo) is a very different deal than $2,000/mo for a 1,200 sqft two-bedroom ($1.67/sqft/mo), even though the rent check is identical.

The 2024 NAR data put the US median existing-home sale price near $410,000 and the median home size near 1,860 sqft, which works out to roughly $220/sqft as the national median. That number masks huge regional variance: San Francisco, Manhattan, and Boston are routinely north of $700/sqft, Cleveland, Memphis, and Detroit run closer to $100/sqft, and most secondary metros sit between $150/sqft and $300/sqft. The US median is useful as a sanity check (am I paying roughly market, or several multiples above it?), but for a real comp you want a $/sqft pulled from the last 6 to 12 months of sales inside the same ZIP code, ideally for similar-vintage homes.

$/sqft is a rule of thumb that quietly assumes most of the price reflects interior livable area. That assumption fails badly at the high end. A $20M Aspen home is paying for 5 acres of private land, ski-in/ski-out access, mountain views, a custom architect, and a chef's kitchen built around a $80K range, not for raw square footage. The $/sqft can look insane (a $4,000/sqft Manhattan penthouse) without being mispriced, because the comp set is amenities, location prestige, and view, not interior area. The same trap shows up in waterfront, historic, and ultra-low-density properties. For the top 5 to 10% of any market, fall back on direct comp sales of properties with similar amenity stacks; $/sqft is most reliable in the middle 80% of the market where interior area really is the dominant price driver.

Yes, and they trip people up constantly. US commercial leases (office, retail, industrial) almost always quote rent in annual $/sqft. An office at $36/sqft is $36 per square foot per year, so a 2,000 sqft suite costs 2,000 * $36 / 12 = $6,000 per month. Most US residential listings (apartments, single-family rentals on Zillow or Apartments.com) quote in monthly $/sqft. The same suite at $3/sqft residentially-stated would mean $3 per square foot per month, so 2,000 sqft = $6,000 per month. They are the same number with very different units. This calculator returns both for rent mode so you can hand the right one to whichever audience you are talking to. Always confirm whether a quoted $/sqft is annual (commercial) or monthly (residential) before comparing two offers.

Pick the convention your counterparty uses. For residential apartment hunting in the US, monthly $/sqft is dominant: a 1,000 sqft apartment renting for $2,000 is $2/sqft/mo, and the published national median for typical apartments hovers around $1.75/sqft/mo. For office, retail, and industrial leases, annual $/sqft is universal: that same 1,000 sqft space at the same $2,000/mo rent is $24/sqft/yr. Internally, monthly $/sqft is more intuitive when you are comparing your total monthly housing budget. Externally, when a landlord or broker hands you a number, just confirm the units before doing the math. This calculator outputs both figures simultaneously so you do not have to do the * 12 / 12 in your head when switching between the two worlds.