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 m = 3.2404e-17 pc
1 pc = 30,860,000,000,000,000 m
例子:
将15 仪表转换为parsec：
15 m = 4.8607e-16 pc
| 仪表 | parsec |
|---|---|
| 0.01 m | 3.2404e-19 pc |
| 0.1 m | 3.2404e-18 pc |
| 1 m | 3.2404e-17 pc |
| 2 m | 6.4809e-17 pc |
| 3 m | 9.7213e-17 pc |
| 5 m | 1.6202e-16 pc |
| 10 m | 3.2404e-16 pc |
| 20 m | 6.4809e-16 pc |
| 30 m | 9.7213e-16 pc |
| 40 m | 1.2962e-15 pc |
| 50 m | 1.6202e-15 pc |
| 60 m | 1.9443e-15 pc |
| 70 m | 2.2683e-15 pc |
| 80 m | 2.5924e-15 pc |
| 90 m | 2.9164e-15 pc |
| 100 m | 3.2404e-15 pc |
| 250 m | 8.1011e-15 pc |
| 500 m | 1.6202e-14 pc |
| 750 m | 2.4303e-14 pc |
| 1000 m | 3.2404e-14 pc |
| 10000 m | 3.2404e-13 pc |
| 100000 m | 3.2404e-12 pc |
规则