Enter the total dBm into the calculator to convert it to units of watts. This calculator can also determine db given the watts.

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## DB to Watts Formula

The following formula is used to convert dBm to watts.

W = 10^{(dBm-30)/10)}

- Where W is the power in watts
- dBm is the decibel-milliwatts

To calculate watts from db, subtract 30 from the dBm, divide the result by 10, then take a value of 10 and raise it to the power of the result calculated previously.

## Db to Watts Definition

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

## Db to Watts Example

How to convert dB to watts?

**First, determine the total number of dBm.**Calculate or measure the total decibel-milliwatts. This is a measure of power of the system.

**Next, calculate the watts.**Convert the dBm into watts using the equation above.

## FAQ

**What are watts?**

Watts are a measure of power which is a unit that describes energy over time.