Area converter
Type an area, choose the units, and see the result and the same area in every common unit. Imperial areas follow exactly from the international foot, so the factors are not rounded.
Runs in your browser: nothing you enter is sent anywhere.
How to use it
- Type a number. A dot or a comma works as the decimal separator.
- Choose the unit you have and the unit you need. The ⇄ button swaps them.
- The table below shows the same area in all common units at once.
Conversion factors
Every unit is converted through the square meter. Square feet, yards, inches and miles are the exact squares of their length units; the acre is defined as 4,046.8564224 m² (10 square chains).
| Unit |
In square meters |
| 1 square inch |
0.00064516 m² |
| 1 square foot |
0.09290304 m² |
| 1 square yard |
0.83612736 m² |
| 1 acre |
4,046.8564224 m² |
| 1 hectare |
10,000 m² |
| 1 square kilometer |
1,000,000 m² |
| 1 square mile |
2,589,988.110336 m² |
Worked example
A flat is 65 m². In square feet that is 65 ÷ 0.09290304 = 699.65 ft². A 2.5-acre plot is 2.5 × 4,046.8564224 = 10,117 m², or 1.012 hectares.
Quick reference
- 1 m² ≈ 10.764 ft² ≈ 1.196 yd²
- 1 ft² ≈ 929.03 cm²
- 1 acre ≈ 0.4047 ha ≈ 43,560 ft²
- 1 km² = 100 ha ≈ 247.1 acres
Frequently asked questions
How many square feet are in a square meter?
About 10.7639. A square foot is exactly 0.09290304 m², so 1 m² = 1 ÷ 0.09290304 ft².
How many square meters are in an acre?
Exactly 4,046.8564224 m² for the international acre, which is about 0.4047 hectares.
What is a hectare?
10,000 square meters, a square 100 m on a side. One hectare is about 2.471 acres.
How many acres are in a square mile?
640. This converter uses the international mile (1,609.344 m), so a square mile is 2,589,988.110336 m².
Why is converting square units not the same as converting lengths?
Area scales with the square of length. 1 m = 3.28 ft, but 1 m² = 3.28² = 10.76 ft², so a length factor cannot be used directly.