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Convert from Square Millimeters (mm²)
Convert from Square Centimeters (cm²)
Convert from Square Meters (m²)
Convert from Square Kilometers (km²)
Convert from Hectares (ha)
Convert from Square Inches (in²)
Convert from Square Feet (ft²)
Convert from Square Yards (yd²)
Convert from Square Miles (mi²)
Convert from Acres (ac)
About Area Conversions
Our free online area converter handles all 90 combinations of the 10 most common area units — covering both metric (mm², cm², m², km², hectares) and imperial (in², ft², yd², mi², acres) systems. Essential for real estate, land measurement, construction, agriculture, and engineering.
The 10 Area Units
| Unit | Symbol | Equal to (m²) | Common Use |
|---|---|---|---|
| Square Millimeter | mm² | 0.000001 m² | Engineering, electronics |
| Square Centimeter | cm² | 0.0001 m² | Medical, scientific |
| Square Meter | m² | 1 m² | Real estate (metric) |
| Square Kilometer | km² | 1,000,000 m² | Cities, geography |
| Hectare | ha | 10,000 m² | Agriculture, land |
| Square Inch | in² | 0.000645 m² | Screens, US manufacturing |
| Square Foot | ft² | 0.0929 m² | US real estate |
| Square Yard | yd² | 0.836 m² | Carpet, fabric |
| Square Mile | mi² | 2,589,988 m² | US/UK geography |
| Acre | ac | 4,046.86 m² | US/UK land, real estate |
Common Area Conversions
- 1 square meter = 10.764 square feet
- 1 acre = 4,046.86 square meters = 43,560 square feet
- 1 hectare = 2.471 acres = 10,000 m²
- 1 km² = 100 hectares = 247.1 acres
- 1 square mile = 640 acres = 2.59 km²
Frequently Asked Questions
How do I convert square meters to square feet quickly?
Multiply square meters by 10.764 to get square feet. For example, 100 m² = 1,076.4 ft². For a quick estimate, multiply by 10.75 — this gives you a result within 0.1% accuracy.
What's the difference between acres and hectares?
A hectare (ha) is a metric unit equal to 10,000 m² (2.471 acres). An acre is an imperial unit equal to 4,046.86 m² (0.405 hectares). One hectare is about 2.47 acres — slightly larger than a football field including end zones.
How many square feet in an acre?
One acre equals 43,560 square feet. This is approximately the area covered by a standard American football field including the end zones. It's also roughly equivalent to 4,047 square meters.
How many square meters in a hectare?
One hectare equals exactly 10,000 square meters. Think of it as a square measuring 100m × 100m. The hectare is the standard unit for agricultural and forest land in most countries.
How accurate are area conversions for real estate?
For real estate, precision to 2 decimal places is usually sufficient. Our calculator provides 6 decimal places for precision, which exceeds the requirements for property listing accuracy. Always verify critical measurements with professional surveys.
💡 Quick Reference: Key Area Conversions
| From | To | Multiply By |
|---|---|---|
| 1 m² | ft² | 10.7639 |
| 1 ft² | m² | 0.092903 |
| 1 acre | m² | 4,046.86 |
| 1 ha | acres | 2.47105 |
| 1 km² | mi² | 0.386102 |
| 1 mi² | km² | 2.58999 |
Real-World Applications
- Real estate: Compare property sizes across metric and imperial countries
- Agriculture: Convert farmland measurements for international trade and subsidies
- Construction: Estimate materials for flooring, roofing, and painting projects
- Engineering: Scale precision mm² measurements to room or building dimensions
- Geography: Compare city, national park, and country sizes in different units
