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 = 3.8293e-20 cal
1 cal = 26,114,419,103,970,840,000 eV
例子:
将15 电子伏特转换为卡路里：
15 eV = 5.7440e-19 cal
| 电子伏特 | 卡路里 |
|---|---|
| 0.01 eV | 3.8293e-22 cal |
| 0.1 eV | 3.8293e-21 cal |
| 1 eV | 3.8293e-20 cal |
| 2 eV | 7.6586e-20 cal |
| 3 eV | 1.1488e-19 cal |
| 5 eV | 1.9147e-19 cal |
| 10 eV | 3.8293e-19 cal |
| 20 eV | 7.6586e-19 cal |
| 30 eV | 1.1488e-18 cal |
| 40 eV | 1.5317e-18 cal |
| 50 eV | 1.9147e-18 cal |
| 60 eV | 2.2976e-18 cal |
| 70 eV | 2.6805e-18 cal |
| 80 eV | 3.0634e-18 cal |
| 90 eV | 3.4464e-18 cal |
| 100 eV | 3.8293e-18 cal |
| 250 eV | 9.5733e-18 cal |
| 500 eV | 1.9147e-17 cal |
| 750 eV | 2.8720e-17 cal |
| 1000 eV | 3.8293e-17 cal |
| 10000 eV | 3.8293e-16 cal |
| 100000 eV | 3.8293e-15 cal |
规则