长度是一个基本的物理量，可测量两个点之间的距离。它是国际单元（SI）中的七个基本单元之一，仪表（m）是其基本单元。
1 in = 0.001 ch
1 ch = 792 in
例子:
将15 英寸转换为链：
15 in = 0.019 ch
| 英寸 | 链 |
|---|---|
| 0.01 in | 1.2626e-5 ch |
| 0.1 in | 0 ch |
| 1 in | 0.001 ch |
| 2 in | 0.003 ch |
| 3 in | 0.004 ch |
| 5 in | 0.006 ch |
| 10 in | 0.013 ch |
| 20 in | 0.025 ch |
| 30 in | 0.038 ch |
| 40 in | 0.051 ch |
| 50 in | 0.063 ch |
| 60 in | 0.076 ch |
| 70 in | 0.088 ch |
| 80 in | 0.101 ch |
| 90 in | 0.114 ch |
| 100 in | 0.126 ch |
| 250 in | 0.316 ch |
| 500 in | 0.631 ch |
| 750 in | 0.947 ch |
| 1000 in | 1.263 ch |
| 10000 in | 12.626 ch |
| 100000 in | 126.263 ch |
规则