Convert Area Measurements
The conversion is calculated from the selected starting unit to the selected target unit. All calculations run in your browser.
Note: Very large or very small values may be displayed in scientific notation when that makes the result easier to read.
Popular Area Conversions
Choose a conversion to load it into the calculator.
Area Unit Conversion Table
The following reference table shows how common area units relate to one square meter. Values are rounded for readability.
| Unit | Symbol | Equivalent in square meters |
|---|---|---|
| Square millimeter | mm² | 0.000001 m² |
| Square centimeter | cm² | 0.0001 m² |
| Square meter | m² | 1 m² |
| Are | a | 100 m² |
| Hectare | ha | 10,000 m² |
| Square kilometer | km² | 1,000,000 m² |
| Square inch | in² | 0.00064516 m² |
| Square foot | ft² | 0.09290304 m² |
| Square yard | yd² | 0.83612736 m² |
| Acre | ac | 4,046.8564224 m² |
| Square mile | mi² | 2,589,988.110336 m² |
International-foot definitions are used for square feet, square yards, acres, and square miles. Historical survey-unit definitions can differ.
Reference: NIST conversion factors for area.
How to Convert Area Units
To convert an area measurement from one unit to another, first express the original value in a common reference unit, such as square meters. Then divide by the target unit's square-meter equivalent.
In this calculator, each unit has a conversion factor that represents how many square meters it contains. For example, one square foot is 0.09290304 square meters, while one hectare is 10,000 square meters.
Example: 100 square meters to square feet
Example: 2 hectares to acres
Worked Area Conversion Examples
1. Convert 50 m² to ft²
Multiply 50 by approximately 10.7639104167. The result is about 538.196 square feet.
2. Convert 1,000 ft² to m²
Multiply 1,000 by 0.09290304. The result is 92.90304 square meters.
3. Convert 5 hectares to acres
Divide 50,000 square meters by 4,046.8564224. The result is approximately 12.355 acres.
4. Convert 3 km² to hectares
One square kilometer equals 100 hectares. Therefore, 3 km² equals 300 hectares.
5. Convert 250 cm² to mm²
One square centimeter equals 100 square millimeters. Therefore, 250 cm² equals 25,000 mm².
Which Area Unit Should You Use?
Metric area units
Square millimeters and square centimeters are useful for small surfaces and components. Square meters are common for rooms, floors, and buildings. Hectares and square kilometers are convenient for land, farms, parks, and large geographic areas.
Imperial and customary units
Square inches are useful for small objects and materials. Square feet are widely used for rooms and property in the United States. Square yards are common for flooring and fabric estimates, while acres and square miles are used for land and larger areas.
Frequently Asked Questions
How do I convert square meters to square feet?
Multiply square meters by approximately 10.7639104167. For example, 10 m² is approximately 107.6391 ft².
How many square meters are in one hectare?
One hectare equals exactly 10,000 square meters. A hectare is equivalent to 100 ares.
How many square feet are in one acre?
One international acre equals exactly 43,560 square feet, or approximately 4,046.8564224 square meters.
What is the difference between area and length?
Length measures a single dimension, while area measures the two-dimensional surface enclosed by a shape. Area is expressed in squared units, such as m², cm², or ft².
Why is one square meter equal to 10,000 square centimeters?
One meter equals 100 centimeters. Because area has two dimensions, the conversion factor is 100 × 100 = 10,000.
Can I convert acres to hectares?
Yes. One international acre is approximately 0.40468564224 hectares. Use the converter above to calculate any value.
Is this area unit converter free?
Yes. It is free to use, works in a modern browser, and does not require an account or external conversion API.
Are the conversion results exact?
The calculator uses defined conversion factors for the supported units. The displayed result may be rounded for readability, so additional decimal places may be useful for precision work.