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Free area unit converter to calculate square feet to square meters (sq ft to sq m), acres to hectares, and square inches. Perfect for real estate and construction.
Visual square footprint comparison
Equal to a square space of about 3.16 ft² on each side.
| Square Foot (ft²) | Square Centimeter (cm²) | Square Centimeter (Reverse) | Square Foot Equivalent | Action |
|---|---|---|---|---|
| 0.1 ft² | 0.10000 cm² | 0.1 cm² | 0.10000 ft² | |
| 0.5 ft² | 0.50000 cm² | 0.5 cm² | 0.50000 ft² | |
| 1 ft² | 1.00000 cm² | 1 cm² | 1.00000 ft² | |
| 2 ft² | 2.00000 cm² | 2 cm² | 2.00000 ft² | |
| 5 ft² | 5.00000 cm² | 5 cm² | 5.00000 ft² | |
| 10 ft² | 10.00000 cm² | 10 cm² | 10.00000 ft² | |
| 20 ft² | 20.00000 cm² | 20 cm² | 20.00000 ft² | |
| 50 ft² | 50.00000 cm² | 50 cm² | 50.00000 ft² | |
| 100 ft² | 100.00000 cm² | 100 cm² | 100.00000 ft² | |
| 500 ft² | 500.00000 cm² | 500 cm² | 500.00000 ft² | |
| 1000 ft² | 1,000.00000 cm² | 1000 cm² | 1,000.00000 ft² |
Symbol: mm². Commonly used in: metric.
Symbol: cm². Commonly used in: metric.
Symbol: m². Commonly used in: metric.
Symbol: ha. Commonly used in: metric.
Symbol: km². Commonly used in: metric.
Every conversion starts with the standard baseline rate between these two units:
Multiply your entered number by the conversion rate to calculate the exact target value:
The result is neatly rounded to your preferred decimal setting so it is clear and ready to use:
| Unit Name | Symbol | System | Conversion Rate | Common Uses |
|---|---|---|---|---|
| Square Millimeter | mm² | metric | 1 mm² = 1.000000 mm² | Everyday, home, and school measurements in Area. |
| Square Centimeter | cm² | metric | 1 cm² = 100.000000 mm² | Everyday, home, and school measurements in Area. |
| Square Meter | m² | metric | 1 m² = 1,000,000.000000 mm² | Everyday, home, and school measurements in Area. |
| Hectare | ha | metric | 1 ha = 10,000,000,000.000000 mm² | Everyday, home, and school measurements in Area. |
| Square Kilometer | km² | metric | 1 km² = 1,000,000,000,000.000000 mm² | Everyday, home, and school measurements in Area. |
| Square Inch | in² | imperial | 1 in² = 645.160000 mm² | Everyday, home, and school measurements in Area. |
| Square Foot | ft² | imperial | 1 ft² = 92,903.040000 mm² | Everyday, home, and school measurements in Area. |
| Square Yard | yd² | imperial | 1 yd² = 836,127.360000 mm² | Everyday, home, and school measurements in Area. |
| Acre | ac | imperial | 1 ac = 4,046,856,422.400000 mm² | Everyday, home, and school measurements in Area. |
| Square Mile | mi² | imperial | 1 mi² = 2,589,988,110,336.000000 mm² | Everyday, home, and school measurements in Area. |
Historically, an acre was defined as the amount of land that one yoke of oxen could plow in one single day (a chain of 66 feet by a furlong of 660 feet = 43,560 sq ft).
Remember that when converting linear units to area units, the factor is squared: 1 meter = 3.28084 feet, but 1 square meter = (3.28084)² = 10.7639 square feet.
There are exactly 10.7639104 square feet in 1 square meter. To convert m² to sq ft in your head, multiply by 10 and add roughly 7.5%.
There are exactly 43,560 square feet in 1 acre. An acre is roughly 208.71 feet by 208.71 feet if shaped as a square.
Every calculation uses trusted, standard definitions so your results are 100% accurate for school, home, work, and recipes.
