dBm to Watts Calculator

Calculate Power in Watts from dBm

Formula

The formula to convert dBm to watts (W) is:

\[ W = 10^{\left(\frac{dBm - 30}{10}\right)} \]

Where:

What is dBm to Watts Conversion?

Converting dB to watts is actually the process of converting decibel-milliwatts to watts since decibel in itself is just a unitless factor.

Example Calculations

Example 1:

Using the formula:

\[ W = 10^{\left(\frac{30 - 30}{10}\right)} = 10^0 = 1 \text{ W} \]

Example 2:

Using the formula:

\[ W = 10^{\left(\frac{40 - 30}{10}\right)} = 10^1 = 10 \text{ W} \]