面积转换器
转换平方米、平方英尺、英亩、公顷等。
Enter a value to convert instantly between units of area — square millimeters to square miles, plus acres and hectares. Everything runs locally in your browser.
工作原理
- 1 Type a value.
- 2 Pick the units to convert from and to.
- 3 Copy the result, or Swap to reverse.
常见用例
- Convert land area in acres or hectares.
- Switch m² and ft² for floor plans.
- Estimate plot sizes.
- Convert property listings.
常见问题
Is my input sent to a server?
No. Every calculation runs locally in your browser — your input is never uploaded, stored or logged.
How big is an acre?
1 acre = 4046.8564224 m² ≈ 0.4047 hectares.
Is it really free?
Yes — free, with no signup and no limits.