Area Converter — Convert m², ft², Acres, Hectares, and More
Enter an area value, pick your unit, and see all other units instantly with the formula shown.
Converting area between units comes down to squaring the linear conversion factor. Because area is two-dimensional, a unit that is 3 times longer in each direction covers 9 times the area. This converter handles the ten most common area units across metric and imperial systems: from square millimeters for precision engineering to square miles for geographic regions. Pick your source unit, enter a value, and every other unit updates instantly with the exact formula used.
How to use the area converter
- Enter the area value you want to convert.
- Select the unit you are converting from using the dropdown.
- The tool shows all other units at once with the formula for each.
- Click Copy next to any result to copy it to your clipboard.
- Share a specific conversion by copying the URL — it preserves your value and unit.
Worked examples
ft² to m²: apartment size
Enter 850 and select square foot. Formula: 850 times 0.092903 equals 78.97 m². An 850 ft² apartment is about 79 m², a common size for a one-bedroom unit in the US.
acres to hectares: farm land
Enter 250 and select acre. Formula: 250 times 0.40469 equals 101.17 ha. A 250-acre farm is just over 100 hectares, the metric benchmark for mid-size agricultural holdings.
km² to mi²: city area
Enter 689 and select square kilometer. Formula: 689 times 0.38610 equals 266 mi². This is close to the area of New York City (about 302 mi² total, varying by borough).
ha to acres: sports field
Enter 1 and select hectare. Formula: 1 times 2.4711 equals 2.4711 acres. A standard FIFA football pitch (105 m × 68 m = 0.714 ha) is about 1.76 acres.
Conversion factor reference
| From | To | Formula |
|---|---|---|
| m² | ft² | multiply by 10.764 |
| ft² | m² | multiply by 0.092903 |
| m² | yd² | multiply by 1.196 |
| yd² | m² | multiply by 0.83613 |
| acre | m² | multiply by 4046.9 |
| m² | acre | multiply by 0.00024711 |
| ha | acre | multiply by 2.4711 |
| acre | ha | multiply by 0.40469 |
| km² | mi² | multiply by 0.38610 |
| mi² | km² | multiply by 2.5900 |
| km² | ha | multiply by 100 |
| ha | km² | multiply by 0.01 |
| in² | cm² | multiply by 6.4516 |
| cm² | in² | multiply by 0.15500 |
| mi² | acre | multiply by 640 |
| acre | mi² | multiply by 0.0015625 |
Real-world area reference
| Place / Object | Metric | Imperial | Hectares |
|---|---|---|---|
| Credit card | 46.06 cm² | 7.14 in² | 0.0046 m² |
| Parking space | 15 m² | 161 ft² | 0.0015 ha |
| Tennis court | 261 m² | 2,808 ft² | 0.026 ha |
| Football pitch (FIFA) | 7,140 m² | 76,854 ft² | 0.714 ha |
| Central Park, NYC | 3.41 km² | 843 acres | 341 ha |
| London (Greater) | 1,572 km² | 607 mi² | 157,200 ha |
| France | 551,695 km² | 213,011 mi² | 55.17 M ha |
Frequently asked questions
How do you convert square feet to square meters?
Multiply the area in square feet by 0.092903 to get square meters. For example, 500 ft² times 0.092903 equals 46.45 m². The conversion factor comes from 1 foot equaling exactly 0.3048 meters.
How do you convert acres to square meters?
Multiply the area in acres by 4046.9 to get square meters. One acre equals 43,560 square feet, which converts to 4046.8564224 m². For example, 2.5 acres equals 10,117 m².
What is the difference between a hectare and a square kilometer?
A hectare (ha) equals 10,000 m². A square kilometer (km²) equals 1,000,000 m². So 1 km² equals exactly 100 ha. Hectares are used for land parcels and farms; square kilometers are used for cities and countries.
How many acres are in a square mile?
There are exactly 640 acres in one square mile. This is a fixed relationship in the US customary system: 1 mile equals 5280 feet, so 1 mi² equals 5280² = 27,878,400 ft², and dividing by 43,560 ft² per acre gives 640.
How do you convert square inches to square centimeters?
Multiply the area in square inches by 6.4516 to get square centimeters. This comes from 1 inch equaling exactly 2.54 cm, so 1 in² equals 2.54² = 6.4516 cm².
What is a hectare in everyday terms?
A hectare is 10,000 m², roughly the size of a standard football pitch (about 1.1 acres or 107,640 ft²). It is the most common unit for agricultural land in metric countries.
How do you convert square yards to square meters?
Multiply the area in square yards by 0.83613 to get square meters. One yard equals exactly 0.9144 meters, so 1 yd² equals 0.9144² = 0.83612736 m².
How accurate are these area conversions?
Results are shown to at least 5 significant figures using exact conversion factors from the International System of Units (SI). All imperial factors derive from exact definitions: 1 inch = 0.0254 m, 1 foot = 0.3048 m, 1 yard = 0.9144 m, and 1 mile = 1609.344 m.
What is the difference between square miles and square kilometers?
One square mile equals 2.58999 km². The US and UK commonly use square miles for geographic areas; most other countries use square kilometers. For example, a city of 100 mi² is about 259 km².