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 = 25,400,000 nm
1 nm = 3.9370e-8 in
例子:
将15 英寸转换为纳米：
15 in = 381,000,000 nm
| 英寸 | 纳米 |
|---|---|
| 0.01 in | 254,000 nm |
| 0.1 in | 2,540,000 nm |
| 1 in | 25,400,000 nm |
| 2 in | 50,800,000 nm |
| 3 in | 76,200,000 nm |
| 5 in | 127,000,000 nm |
| 10 in | 254,000,000 nm |
| 20 in | 508,000,000 nm |
| 30 in | 762,000,000 nm |
| 40 in | 1,016,000,000 nm |
| 50 in | 1,270,000,000 nm |
| 60 in | 1,524,000,000 nm |
| 70 in | 1,778,000,000 nm |
| 80 in | 2,032,000,000 nm |
| 90 in | 2,286,000,000 nm |
| 100 in | 2,540,000,000 nm |
| 250 in | 6,350,000,000 nm |
| 500 in | 12,700,000,000 nm |
| 750 in | 19,050,000,000 nm |
| 1000 in | 25,400,000,000 nm |
| 10000 in | 254,000,000,000 nm |
| 100000 in | 2,540,000,000,000 nm |
规则