速度是对象移动的速度，而速度是指定方向的速度。它以每秒米（m/s）为单位进行测量。
1 pc/yr = 9,461,000,000,000,000,000 mm/s
1 mm/s = 1.0570e-19 pc/yr
例子:
将15 每年parsec转换为每秒毫米：
15 pc/yr = 141,915,000,000,000,000,000 mm/s
| 每年parsec | 每秒毫米 |
|---|---|
| 0.01 pc/yr | 94,610,000,000,000,000 mm/s |
| 0.1 pc/yr | 946,100,000,000,000,000 mm/s |
| 1 pc/yr | 9,461,000,000,000,000,000 mm/s |
| 2 pc/yr | 18,922,000,000,000,000,000 mm/s |
| 3 pc/yr | 28,383,000,000,000,000,000 mm/s |
| 5 pc/yr | 47,305,000,000,000,000,000 mm/s |
| 10 pc/yr | 94,610,000,000,000,000,000 mm/s |
| 20 pc/yr | 189,220,000,000,000,000,000 mm/s |
| 30 pc/yr | 283,830,000,000,000,000,000 mm/s |
| 40 pc/yr | 378,440,000,000,000,000,000 mm/s |
| 50 pc/yr | 473,050,000,000,000,000,000 mm/s |
| 60 pc/yr | 567,660,000,000,000,000,000 mm/s |
| 70 pc/yr | 662,270,000,000,000,000,000 mm/s |
| 80 pc/yr | 756,880,000,000,000,000,000 mm/s |
| 90 pc/yr | 851,490,000,000,000,000,000 mm/s |
| 100 pc/yr | 946,100,000,000,000,000,000 mm/s |
| 250 pc/yr | 2,365,250,000,000,000,000,000 mm/s |
| 500 pc/yr | 4,730,500,000,000,000,000,000 mm/s |
| 750 pc/yr | 7,095,750,000,000,000,000,000 mm/s |
| 1000 pc/yr | 9,461,000,000,000,000,000,000 mm/s |
| 10000 pc/yr | 94,610,000,000,000,000,000,000 mm/s |
| 100000 pc/yr | 946,100,000,000,000,000,000,000 mm/s |
规则