Free Area Converter
The Area Converter converts between square millimetres, centimetres, metres, kilometres, and land units — hectares, acres, and square feet, yards, and miles. Results update live.
Area pairs naturally with Length when you are working out flooring or paint, and with Volume for anything three-dimensional.
How to use the Area Converter
- 1 Enter the area value you want to convert.
- 2 Select the unit you are starting from — square metres, square feet, acres, hectares, square miles and more.
- 3 See the equivalent in every other unit at once.
- 4 Swap the units to convert in the opposite direction.
How to Use
Enter a value, pick the source and target units, and the conversion appears instantly. The table shows every supported unit at once.
- Metric and imperial area units
- Hectares and acres
- Full conversion table
Frequently asked questions
Why can I not just multiply square feet by 0.3048 to get square metres?
Because the conversion factor is squared too. One foot is 0.3048 m, so one square foot is 0.3048² = 0.092903 m². Multiplying by 0.3048 instead of 0.0929 would overstate the area by more than three times.
How big is an acre?
4,046.856 m², or about 0.4047 hectares. It was historically the area one ox team could plough in a day — one chain wide by one furlong long (66 × 660 feet). It has no metric equivalent by design, which is why land in the US is still described in acres.
What is the difference between a hectare and an acre?
A hectare is 10,000 m² — a square 100 m on each side — and is metric, so it divides neatly into metric lengths. An acre is smaller at 4,047 m². One hectare is about 2.47 acres, and agricultural land is usually quoted in hectares outside the US.
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