Area Converter
Surface - square millimeters to square miles.
Enter a value above to convert between m² and ft².
How to convert area units
Area is based on the square meter. Because area scales with the square of length, each factor is the square of the matching length factor - one foot is 0.3048 m, so one square foot is 0.3048² = 0.09290304 m². For land, the common units are the acre and the hectare.
Worked example
To convert 100 square feet to square meters: 100 × 0.09290304 = 9.29 m². Two hectares is 2 × 2.471 = 4.94 acres, and one acre is 4046.86 m².
How big is an acre in square meters?
One acre equals 4046.856422 square meters. One hectare equals 10,000 square meters (about 2.471 acres), one square foot equals 0.09290304 square meters, one square mile equals 2.58998811 square kilometers, and one square kilometer equals 1,000,000 square meters.
When you'll use an area converter
Area conversion comes up in real estate and land (acres, hectares, square meters and square feet), flooring, paint and carpet estimates, farming, and mapping. The table above lists your value in all 9 supported units at once.
Common area conversions
Quick-reference rates for common area conversions - square meters, feet, yards, acres and hectares, one unit at a time.
| From | To |
|---|---|
| 1 square meter (m²) | 10.7639 ft² |
| 1 square foot (ft²) | 0.0929 m² |
| 1 acre (ac) | 0.4047 ha |
| 1 hectare (ha) | 2.4711 ac |
| 1 square kilometer (km²) | 0.3861 mi² |
| 1 square mile (mi²) | 2.59 km² |
| 1 square meter (m²) | 1.196 yd² |
| 1 square yard (yd²) | 0.8361 m² |
| 1 square foot (ft²) | 144 in² |
| 1 square inch (in²) | 6.4516 cm² |
| 1 hectare (ha) | 10,000 m² |
Frequently asked questions
How many square feet are in an acre?
One acre equals about 43,560 square feet. This comes from the acre being 4046.8564224 square meters and one square foot being 0.09290304 square meters, so 4046.8564224 divided by 0.09290304 is 43,560.
Is a hectare bigger than an acre?
Yes, a hectare is larger. One hectare is 10,000 square meters while one acre is 4046.8564224 square meters, so a hectare equals about 2.471 acres.
How many acres are in a square mile?
There are exactly 640 acres in one square mile. A square mile is 2,589,988.110336 square meters and an acre is 4046.8564224 square meters, and dividing the two gives 640.
What is the formula to convert square feet to square yards?
Divide the number of square feet by 9, because one square yard is 9 square feet. For example, 100 square feet divided by 9 is about 11.11 square yards.
How many square inches are in a square foot?
There are 144 square inches in one square foot. A foot is 12 inches, and area scales with the square of length, so 12 times 12 equals 144.
What is a hectare?
A hectare is a metric unit of area equal to 10,000 square meters, or a square that is 100 meters on each side. It is widely used for land and farmland and equals about 2.471 acres or 0.01 square kilometers.
Popular area conversions
Quick links to popular area conversions - tap any pair to open the converter ready to go.