力是一种相互作用，当没有反对时，会改变对象的运动。它是在纽顿（N）中测量的。
1 ft·lbf = 0.014 hN
1 hN = 73.756 ft·lbf
例子:
将15 脚击力转换为hectonewton：
15 ft·lbf = 0.203 hN
| 脚击力 | hectonewton |
|---|---|
| 0.01 ft·lbf | 0 hN |
| 0.1 ft·lbf | 0.001 hN |
| 1 ft·lbf | 0.014 hN |
| 2 ft·lbf | 0.027 hN |
| 3 ft·lbf | 0.041 hN |
| 5 ft·lbf | 0.068 hN |
| 10 ft·lbf | 0.136 hN |
| 20 ft·lbf | 0.271 hN |
| 30 ft·lbf | 0.407 hN |
| 40 ft·lbf | 0.542 hN |
| 50 ft·lbf | 0.678 hN |
| 60 ft·lbf | 0.813 hN |
| 70 ft·lbf | 0.949 hN |
| 80 ft·lbf | 1.085 hN |
| 90 ft·lbf | 1.22 hN |
| 100 ft·lbf | 1.356 hN |
| 250 ft·lbf | 3.39 hN |
| 500 ft·lbf | 6.779 hN |
| 750 ft·lbf | 10.169 hN |
| 1000 ft·lbf | 13.558 hN |
| 10000 ft·lbf | 135.582 hN |
| 100000 ft·lbf | 1,355.82 hN |
规则