# dBm to Watts Converter

Convert power between dBm, milliwatts and watts. Choose the unit you have and enter a value. The calculation stays in your browser.

## Converted Power

dBm

–

Milliwatts (mW)

–

Watts (W)

–

Enable JavaScript to use the converter. The formulas and reference table remain available below.

## Conversion Formulas

dBm expresses power on a logarithmic scale relative to one milliwatt. Watts and milliwatts express power on a linear scale.

- mW = 10 (dBm / 10)
- W = 10 ((dBm − 30) / 10)
- dBm = 10 × log 10 (mW) = 10 × log 10 (W) + 30
- 1 W = 1,000 mW

Negative dBm values describe positive power below one milliwatt. Zero watts has no finite dBm value; negative watts are outside this converter's scope.

## Power Reference Table

| dBm | mW | W |
| --- | --- | --- |
| 1E-06 | 1E-09 |
| 0.001 | 1E-06 |
| 0.01 | 1E-05 |
| 0.1 | 0.0001 |
| 1 | 0.001 |
| 10 | 0.01 |
| 100 | 0.1 |
| 1000 | 1 |
| 10000 | 10 |
| 1000000 | 1000 |

## Frequently Asked Questions

### Can dBm Be Negative?

Yes. In the Netavo converter, negative dBm means positive power below one milliwatt. It does not mean negative watts.

### Is dBm the Same as dB?

No. dBm expresses power relative to one milliwatt. A dB value expresses a ratio; it does not specify an absolute power on its own.

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Source: https://netavo.com/tools/dbm-to-watts