能量是执行工作的能力。它以各种形式存在，例如动力学，电势，热等。在焦耳（J）中测量。
1 ft·lb = 0 kcal
1 kcal = 3,085.955 ft·lb
例子:
将15 脚转换为千瓦利：
15 ft·lb = 0.005 kcal
| 脚 | 千瓦利 |
|---|---|
| 0.01 ft·lb | 3.2405e-6 kcal |
| 0.1 ft·lb | 3.2405e-5 kcal |
| 1 ft·lb | 0 kcal |
| 2 ft·lb | 0.001 kcal |
| 3 ft·lb | 0.001 kcal |
| 5 ft·lb | 0.002 kcal |
| 10 ft·lb | 0.003 kcal |
| 20 ft·lb | 0.006 kcal |
| 30 ft·lb | 0.01 kcal |
| 40 ft·lb | 0.013 kcal |
| 50 ft·lb | 0.016 kcal |
| 60 ft·lb | 0.019 kcal |
| 70 ft·lb | 0.023 kcal |
| 80 ft·lb | 0.026 kcal |
| 90 ft·lb | 0.029 kcal |
| 100 ft·lb | 0.032 kcal |
| 250 ft·lb | 0.081 kcal |
| 500 ft·lb | 0.162 kcal |
| 750 ft·lb | 0.243 kcal |
| 1000 ft·lb | 0.324 kcal |
| 10000 ft·lb | 3.24 kcal |
| 100000 ft·lb | 32.405 kcal |
规则