Area Converter — Square Feet, Square Meters, Acres & Hectares

Convert between square feet, square meters, acres, hectares, and other area units with exact NIST factors.

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How this conversion works. Every unit is converted through the square meter (SI base) using exact factors from NIST Special Publication 811.

How to use

  1. Choose the units to convert from and to.
  2. Enter a value — the converted result updates instantly.
  3. Click Copy to copy the result to your clipboard.

Frequently asked questions

How do I convert square foot to square meter?

1 square foot = 0.092903 square meter. Choose "Square foot (ft²)" as From and "Square meter (m²)" as To, type a value, and the result updates instantly.

How many square feet are in an acre?

One acre equals exactly 43,560 square feet, or about 4,046.86 square meters. A hectare is larger: 10,000 m², roughly 2.47 acres.

Are these factors exact or rounded?

Exact. Area factors derive from the international foot (0.3048 m exactly), so ft², yd², acre, and mi² conversions carry no rounding error.

Is my data sent to a server?

No. Conversions run entirely in your browser using fixed factors — nothing is uploaded or logged.

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