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dBm to Watts

Calculate dBm to Watts instantly with the exact formula and a worked example.

dBm to Watts

dBm
Power draw
1W
10^(dBm/10) / 1000Calculate dBm to Watts instantly with the exact formula and a worked example.

More about: dBm to Watts

What it calculates

The “dBm to Watts” calculator computes Power draw in W from 1 parameter: dbm.

A standard physics formula used in educational and engineering tasks.

Example calculation

With parameters dBm = 30 the result is 1 W (10^(dBm/10) / 1000).

How to use

  1. Enter dbm — each field above is adjustable with a slider.
  2. Power draw (W) is calculated automatically as you type.
  3. Check the worked example below to see the formula applied to real numbers.
  4. Copy the result or bookmark this calculator.

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FAQ

How is dBm to Watts calculated?
The dBm to Watts calculator computes Power draw (in W) from dbm. Enter your values above and the exact formula is applied instantly; a worked example with real numbers is shown below.
Is the dBm to Watts calculator free?
Yes. It is completely free, needs no signup, runs entirely in your browser, and sends no data to any server.

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