频率是每单位时间重复事件的发生数量。它是在赫兹（Hz）中测量的。
1 Hz = 1,000,000,000,000 pHz
1 pHz = 1.0000e-12 Hz
例子:
将15 赫兹转换为Picohertz：
15 Hz = 15,000,000,000,000 pHz
| 赫兹 | Picohertz |
|---|---|
| 0.01 Hz | 10,000,000,000 pHz |
| 0.1 Hz | 100,000,000,000 pHz |
| 1 Hz | 1,000,000,000,000 pHz |
| 2 Hz | 2,000,000,000,000 pHz |
| 3 Hz | 3,000,000,000,000 pHz |
| 5 Hz | 5,000,000,000,000 pHz |
| 10 Hz | 10,000,000,000,000 pHz |
| 20 Hz | 20,000,000,000,000 pHz |
| 30 Hz | 30,000,000,000,000 pHz |
| 40 Hz | 40,000,000,000,000 pHz |
| 50 Hz | 50,000,000,000,000 pHz |
| 60 Hz | 60,000,000,000,000 pHz |
| 70 Hz | 70,000,000,000,000 pHz |
| 80 Hz | 80,000,000,000,000 pHz |
| 90 Hz | 90,000,000,000,000 pHz |
| 100 Hz | 100,000,000,000,000 pHz |
| 250 Hz | 250,000,000,000,000 pHz |
| 500 Hz | 500,000,000,000,000 pHz |
| 750 Hz | 750,000,000,000,000 pHz |
| 1000 Hz | 1,000,000,000,000,000 pHz |
| 10000 Hz | 10,000,000,000,000,000 pHz |
| 100000 Hz | 100,000,000,000,000,000 pHz |
规则