速度是相对于参考框架的对象位置的变化速率。它以每次距离的单位（例如每秒米（m/s））进行测量。
1 km/s = 39,370.079 in/s
1 in/s = 2.5400e-5 km/s
例子:
将15 每秒公里转换为每秒英寸：
15 km/s = 590,551.181 in/s
| 每秒公里 | 每秒英寸 |
|---|---|
| 0.01 km/s | 393.701 in/s |
| 0.1 km/s | 3,937.008 in/s |
| 1 km/s | 39,370.079 in/s |
| 2 km/s | 78,740.157 in/s |
| 3 km/s | 118,110.236 in/s |
| 5 km/s | 196,850.394 in/s |
| 10 km/s | 393,700.787 in/s |
| 20 km/s | 787,401.575 in/s |
| 30 km/s | 1,181,102.362 in/s |
| 40 km/s | 1,574,803.15 in/s |
| 50 km/s | 1,968,503.937 in/s |
| 60 km/s | 2,362,204.724 in/s |
| 70 km/s | 2,755,905.512 in/s |
| 80 km/s | 3,149,606.299 in/s |
| 90 km/s | 3,543,307.087 in/s |
| 100 km/s | 3,937,007.874 in/s |
| 250 km/s | 9,842,519.685 in/s |
| 500 km/s | 19,685,039.37 in/s |
| 750 km/s | 29,527,559.055 in/s |
| 1000 km/s | 39,370,078.74 in/s |
| 10000 km/s | 393,700,787.402 in/s |
| 100000 km/s | 3,937,007,874.016 in/s |
规则