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 eV = 1.1817e-19 ft·lb
1 ft·lb = 8,462,345,054,862,750,000 eV
例子:
将15 电子伏特转换为脚：
15 eV = 1.7726e-18 ft·lb
| 电子伏特 | 脚 |
|---|---|
| 0.01 eV | 1.1817e-21 ft·lb |
| 0.1 eV | 1.1817e-20 ft·lb |
| 1 eV | 1.1817e-19 ft·lb |
| 2 eV | 2.3634e-19 ft·lb |
| 3 eV | 3.5451e-19 ft·lb |
| 5 eV | 5.9085e-19 ft·lb |
| 10 eV | 1.1817e-18 ft·lb |
| 20 eV | 2.3634e-18 ft·lb |
| 30 eV | 3.5451e-18 ft·lb |
| 40 eV | 4.7268e-18 ft·lb |
| 50 eV | 5.9085e-18 ft·lb |
| 60 eV | 7.0902e-18 ft·lb |
| 70 eV | 8.2719e-18 ft·lb |
| 80 eV | 9.4536e-18 ft·lb |
| 90 eV | 1.0635e-17 ft·lb |
| 100 eV | 1.1817e-17 ft·lb |
| 250 eV | 2.9543e-17 ft·lb |
| 500 eV | 5.9085e-17 ft·lb |
| 750 eV | 8.8628e-17 ft·lb |
| 1000 eV | 1.1817e-16 ft·lb |
| 10000 eV | 1.1817e-15 ft·lb |
| 100000 eV | 1.1817e-14 ft·lb |
规则