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Reference table

dBm to Watts Table: Power in watts by Power in dBm

Reference table of power in watts for dBm to Watts across a range of power in dbm values — exact, engine-computed figures you can read off at a glance.

By Arjun Desai, B.Tech (Engineering) · Updated Jun 2026 · 1 min read

This dbm to watts reference table shows the power in watts for a range of power in dbm values. Every figure is computed with the same engine that powers our dBm to Watts Calculator, so the numbers are exact.

Power in dBmPower in wattsPower in milliwatts
7.5 dBm0.0056235.6234
15 dBm0.03162331.6228
23 dBm0.199526199.5262
30 dBm1.0000001,000.0000
45 dBm31.62277731,622.7766
60 dBm1,000.0000001,000,000.0000
90 dBm1,000,000.0000001,000,000,000.0000
150 dBm1,000,000,000,000.0000001,000,000,000,000,000.0000
210 dBm1,000,000,000,000,000,000.0000001,000,000,000,000,000,000,000.0000
300 dBm1,000,000,000,000,000,013,287,555,072.0000001,000,000,000,000,000,019,884,624,838,656.0000

How to use this table

Find the row closest to your power in dbm and read across to the power in watts. For a value between two rows, the real figure sits between them — or enter your exact numbers in the dBm to Watts Calculator for a precise answer.

Need a value that is not in the table? — the dBm to Watts Calculator does it instantly, for free, with the formula and a worked example built in.

Continue exploring electrical calculators with these tools: Wire Resistance Calculator, Watts to Amps Calculator, kVA to kW Calculator, kWh to Joules Calculator, Resistance from Power Calculator.

Calculators in this guide

Frequently asked questions

Each cell is computed with the standard formula using exact arithmetic — the same calculation behind our dBm to Watts Calculator — so every figure is accurate for the stated assumptions.

Yes. The table covers common power in dbm values; for any exact figure, enter your own numbers in the dBm to Watts Calculator.

Arjun Desai · B.Tech (Engineering)

Arjun Desai is an engineer who writes about the practical physics, electronics and energy calculations behind everyday technology.