Practice Converting FROM dBm to Watts/Milliwatts in Your Head
Remember, all you need to memorize are the following relationships between dB values and "real world" numbers:
| Adding | is the same as multiplying by: |
| 30 dB | 1,000x |
| 20 dB | 100x |
| 10dB | 10x |
| 0dB | 1x |
| 5dB | 3x |
| 3dB | 2x |
Enter a value you wish to convert from dBm and click the calculate button. You can enter any integer value between -120 and +150. Try several different values until you get the hang of it.
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