Area Converter
Convert square meters, square feet, acres, hectares and ping (坪) in real time.
Type any number to convert areas between metric (square meters, hectares, square kilometers) and imperial (square feet, square yards, acres, square miles) units. Includes ping (坪), the traditional unit used for real-estate listings in Taiwan and Japan.
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Common area conversion formulas
These ratios are exact (the values follow from the international yard and the definition of the are).
| From | To | Formula | Example |
|---|---|---|---|
| Square meter | Square foot | 1 m² ≈ 10.7639104 ft² | 20 m² ≈ 215.278 ft² |
| Square foot | Square meter | 1 ft² = 0.09290304 m² | 1000 ft² ≈ 92.903 m² |
| Acre | Square meter | 1 ac = 4046.8564224 m² | 2 ac ≈ 8093.71 m² |
| Hectare | Acre | 1 ha ≈ 2.4710538 ac | 5 ha ≈ 12.355 ac |
| Ping (坪) | Square meter | 1 坪 ≈ 3.305785 m² | 20 坪 ≈ 66.116 m² |
| Square meter | Ping (坪) | 1 m² ≈ 0.3025 坪 | 100 m² ≈ 30.25 坪 |
Ping (坪) to square meters conversion table
Quick lookup for common ping values converted to square meters — useful for real-estate listings in Taiwan and Japan.
| Ping (坪) (坪) | Square meter (m²) |
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Why use this area converter?
Designed for real-estate, gardening, construction and surveying — including units that other converters skip.
- Includes ping (坪) for Taiwanese and Japanese real-estate.
- Covers metric and imperial — from mm² up to mi².
- Real-time conversion with adjustable decimals.
- Mobile-friendly, ad-free, no sign-up.
- All math runs on your device.
Frequently asked questions
How many square meters is 1 ping (坪)?
1 ping ≈ 3.305785 m². It is defined as a square measuring 6 Japanese shaku on each side (about 1.818 m × 1.818 m). Real-estate listings in Taiwan and Japan still use it widely.
How many square feet in an acre?
1 acre = 43,560 ft² = 4,046.8564224 m². The acre originally meant the area a yoke of oxen could plow in a day.
What is the difference between a hectare and an acre?
1 hectare = 10,000 m² ≈ 2.4710538 acres. Hectares are the standard metric land unit; acres are still common in the US and UK.
How is square footage calculated for a room?
Multiply the room’s length by its width in feet. For irregular rooms, split them into rectangles, calculate each, and add the results — then convert to square meters or ping if needed.
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