Acres vs. square feet: comparing two lot listings by hand

Land listings don't agree on units. One agent writes "0.75 acre," another writes "30,000 sq ft," and until both numbers are in the same unit there's no way to tell which lot is actually bigger. The fix is one conversion factor, applied consistently.

The method

An acre is defined as exactly 43,560 square feet. To go from acres to square feet, multiply:

square feet = acres × 43,560

To go the other way, divide:

acres = square feet ÷ 43,560

That single constant is the whole method. Once both lots are expressed in the same unit — either both in square feet or both in acres — comparing them is just comparing two numbers.

A worked example

Lot A is listed as 0.75 acre. Lot B is listed as 30,000 sq ft. Which is bigger?

1. Convert Lot A to square feet: 0.75 × 43,560 = 32,670 sq ft.
2. Lot B is already in square feet: 30,000 sq ft.
3. Compare: 32,670 − 30,000 = 2,670 sq ft. Lot A is larger by 2,670 sq ft.
4. Checking the other direction: Lot B in acres is 30,000 ÷ 43,560 = 0.6887, about 0.69 acre — versus Lot A's 0.75 acre, the same gap expressed the other way.

Either direction gives the same answer: Lot A is the bigger parcel, by about 2,670 sq ft or roughly 0.06 acre, depending which unit you'd rather picture it in.

What this doesn't include

This converts stated area only — it doesn't verify a listing's numbers against a survey or plat, account for irregular lot shapes, easements, setbacks, or buildable area, none of which follow from the raw square footage. A legal description or recorded survey is the authoritative source for a lot's actual boundaries and size, not a listing sheet. Informational only, not real estate or legal advice.

Run your own numbers

The free Area Converter tool converts between square feet, square meters, square yards, acres, hectares and square miles instantly, entirely on your device.