Enter a value in any area unit and instantly see the equivalent in square meters, square feet, acres, hectares and more.
| Unit | Value |
|---|
Area units span an enormous range — from a square millimeter on a circuit board to a square mile of farmland — and the metric, imperial, and land-survey systems rarely line up cleanly. A property listing in acres, a floor plan in square meters, a country's size in square kilometers: this tool lets you enter a value once and see it converted to every common area unit at the same time.
Every area unit converts through the square meter (m²). To convert from unit A to unit B:
Area factors are the square of the corresponding length factors — for example, since 1 ft = 0.3048 m exactly, 1 ft² = 0.3048² = 0.09290304 m² exactly. All conversions here are pure multiplication or division.
| Unit | Symbol | Value in Square Meters |
|---|---|---|
| Square Millimeter | mm² | 0.000001 |
| Square Centimeter | cm² | 0.0001 |
| Square Meter | m² | 1 |
| Square Kilometer | km² | 1,000,000 |
| Square Inch | in² | 0.00064516 |
| Square Foot | ft² | 0.09290304 |
| Square Yard | yd² | 0.83612736 |
| Square Mile | mi² | 2,589,988.110336 |
| Acre | ac | 4,046.8564224 |
| Hectare | ha | 10,000 |
Note: 1 hectare = 100 m × 100 m = 10,000 m² exactly. 1 acre = 43,560 ft² exactly, which comes out to 4,046.8564224 m² using the exact international foot.
Example 1 — Square Meters to Square Feet
A 150 m² apartment: 150 ÷ 0.09290304 m²/ft² ≈ 1,614.6 ft².
Example 2 — Acres to Hectares
A 40-acre farm: 40 × 4,046.8564224 m²/ac ÷ 10,000 m²/ha ≈ 16.19 hectares.
Example 3 — Square Kilometers to Square Miles
A city covering 500 km²: 500 × 1,000,000 m² ÷ 2,589,988.110336 m²/mi² ≈ 193.05 mi².
Example 4 — Square Inches to Square Centimeters
A 20 in² sticker: 20 × 6.4516 cm²/in² = 129.032 cm².