Area Converter
Convert between metric, imperial, and land-measurement area units — square meters to square feet, acres to hectares, and more — with every unit updating live as you type.
Common Area Conversions
- 1 square meter = 10.7639 sq ft
- 1 square foot = 0.092903 sq m
- 1 acre = 0.404686 hectares
- 1 hectare = 2.47105 acres
- 1 square mile = 2.58999 sq km
- 1 square kilometer = 0.386102 sq mi
- 1 acre = 43,560 sq ft
Understanding Area Units
Area units are squared versions of length units, which is why the conversion factors look different from their length counterparts — squaring a small difference in length produces a much bigger difference in area. For example, 1 foot is close to 1/3 of a meter, but 1 square foot is only about 1/10.76 of a square meter, because the length ratio gets squared. This is also why area conversions can't be done by simply moving a decimal point the way most metric length conversions can.
The hectare (10,000 square meters, or a 100 m × 100 m square) and the acre (43,560 square feet, historically the amount of land a team of oxen could plow in a day) are both specialized units for measuring land — real estate, farmland, and forestry — rather than everyday areas like rooms or countertops. A hectare is a bit less than two and a half acres, which is why 'hectares' and 'acres' are so often confused when reading land size in a country that uses the other unit.
Frequently Asked Questions
About this calculator
This area converter lets you enter a value in any of 10 units and see it instantly converted to all the others — from square millimeters up to square miles, including hectares and acres for land measurement. Type a number into any field and every other unit updates automatically, no calculation required.
- 10 units at once — Square millimeters, centimeters, meters, kilometers, inches, feet, yards, plus hectares, acres, and square miles, all converted simultaneously.
- Live conversion — Type a value into any unit and every other field updates instantly — no need to click a button or pick a 'from' and 'to' unit.
- Land measurement units included — Hectares and acres — the standard units for real estate, farmland, and forestry — are built in alongside everyday and scientific area units.
- Metric and imperial together — No need to switch tabs or modes — every metric and imperial area unit is visible and editable at the same time.
- Quick reference table — Common conversions (square feet to square meters, acres to hectares, and more) are listed for fast lookup without typing anything.