Sound converter
Watts to dBm Converter
Convert watts to dBm (decibel-milliwatts) for signal strength and power level measurements.
From
To
Result
1 dBm = 1 dBm
Conversion formula
dBm = 10 × log₁₀(W / 0.001)0.001 DBM equals 0 DBM.
dBm to dBm table
| dBm (dBm) | dBm (dBm) |
|---|---|
| 0.01 | 10 |
| 0.1 | 20 |
| 1 | 30 |
| 2 | 33.0103 |
| 3 | 34.7712 |
| 5 | 36.9897 |
| 10 | 40 |
| 20 | 43.0103 |
| 50 | 46.9897 |
| 100 | 50 |
| 1,000 | 60 |
About this conversion
This converter uses the displayed definition for dbm and its recognized relationship to dbm. Calculations retain full precision internally, and only the visible result is rounded. You can swap the conversion direction without changing the underlying standard.
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Frequently asked questions
How do I convert DBM to DBM?+
dBm = 10 × log₁₀(W / 0.001). The result is rounded for display only.
Why are these conversions non-linear?+
Decibel scales use logarithmic ratios. Converting between dB and linear units requires exponentiation or logarithms, so standard factor-based conversion does not apply.
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