Watt to dBm Converter
How to Convert Watts (W) to dBm
To convert Watts (W) to dBm (decibels relative to 1 milliwatt), use the formula:
W to dBm Calculation Formula
The power P in dBm is equal to 10 times the logarithm (base 10) of the power P in watts divided by 1 milliwatt:
dBm = 10 × log10(P / 0.001)Example Calculation
If you have a power measurement of 1 W, the calculation would be:
dBm = 10 × log10(1 / 0.001) = 10 × log10(1000) = 30 dBmPower (W)
Watts (W) represent the rate of energy transfer or conversion. It indicates how much energy is used per unit of time.
Power (dBm)
dBm is a logarithmic unit used to express power levels in decibels relative to 1 milliwatt. For more information, visit this Wikipedia page.
Watts to dBm Conversion Table
Formula: dBm = 10 × log10(P / 1 mW)
| Watts [W] | dBm |
|---|---|
| 1 W | 30.000000 dBm |
| 2 W | 33.010299 dBm |
| 3 W | 36.020599 dBm |
| 4 W | 39.029144 dBm |
| 5 W | 42.038556 dBm |
| 10 W | 40.000000 dBm |
