Area Converter
Convert between square millimetres, centimetres, metres, kilometres, hectares, acres, square feet, and more.
Result
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All conversions
What is Area Converter?
An area converter lets you switch between different units of surface measurement, from tiny square millimetres to vast square miles. Area units appear in real estate (acres, square feet), agriculture (hectares), science (square metres), and mapping (square kilometres). Conversions are necessary because different countries and industries use different standards.
How to use
- 1 Enter the area value you want to convert in the Value field.
- 2 Select the source unit from the From dropdown.
- 3 Select the target unit from the To dropdown.
- 4 The result and a full conversion table appear instantly.
- 5 Use the swap button to reverse the conversion.
Formula
Example calculation
To convert 5 acres to square metres: 5 ac × 4046.856 m²/ac = 20234.28 m². To then express that in hectares: 20234.28 m² / 10000 m²/ha = 2.023 ha.
Frequently asked questions
How many square feet are in an acre?
One acre equals exactly 43,560 square feet. It also equals approximately 4046.856 square metres or 0.405 hectares.
What is the difference between a hectare and an acre?
A hectare equals 10,000 square metres and is the metric standard for land area. An acre equals about 4046.856 square metres. One hectare is approximately 2.471 acres.
How many square metres are in a square kilometre?
One square kilometre equals 1,000,000 (one million) square metres, since each side is 1000 metres and area scales by the square of the length factor.
What unit of area is used in real estate?
In the US and UK, square feet and acres are common for residential and land measurement. Most other countries use square metres and hectares. Commercial real estate sometimes uses square feet globally.
How do I convert square feet to square metres?
Multiply square feet by 0.092903. For example, 1000 sq ft × 0.092903 = 92.9 m². To go the other way, multiply square metres by 10.7639.