Convert between all common RF power units instantly. Enter a value in any field and all others update automatically.
Enter a value in any field to convert:
| Source | dBm | Watts |
|---|---|---|
| WiFi AP (typical) | 20 dBm | 100 mW |
| Cell phone | 23 dBm | 200 mW |
| Ham radio (QRP) | 37 dBm | 5 W |
| Cell tower | 43 dBm | 20 W |
| FM radio station | 70 dBm | 10 kW |
| Thermal noise floor | -174 dBm | 4e-18 mW |
Was könnten wir verbessern?
RF engineers commonly use logarithmic (decibel) scales because they simplify gain and loss calculations to addition and subtraction.
A 3 dB increase doubles the power. A 10 dB increase is a 10x increase. A 30 dBm signal is 1 watt (1000 milliwatts).
Effective isotropic radiated power.
Complete RF link budget analysis.
Coaxial cable signal attenuation.
Antenna gain calculation.
FSPL calculation.
Wavelength and frequency conversion.