dB To Watts Converter

A dB to Watts Converter helps you convert logarithmic decibel values into linear electrical power (watts). Measuring and calculating power levels is essential in fields such as RF engineering, telecommunications, audio engineering, and electronics. Since decibels measure ratios, understanding their reference points is crucial.

What Is a Watt?

A watt (W) represents the rate at which energy is consumed or transferred.

1 Watt = 1 Joule per second

In electrical systems:

P = VI

Where:

V = Voltage 

I = Current

What is dBm?

dBm stands for decibel-milliwatts.

It expresses power relative to 1 milliwatt (mW).

0 dBm = 1 mW

+10 dBm = 10 mW

+20 dBm = 100 mW

–30 dBm = 0.001 mW

Formula:

$$P\left(\text{mW}\right)={10}^{\frac{\text{dBm}}{10}}$$

What is dBW?

dBW stands for decibel-watts, referenced to 1 watt (W).

0 dBW = 1 W

+10 dBW = 10 W

–30 dBW = 0.001 W

Formula:

$$P\left(W\right)={10}^{\frac{\text{dBW}}{10}}$$

What is dBk?

dBk refers to decibel-kilowatts, relative to 1 kilowatt (kW).

0 dBk = 1 kW

–10 dBk = 0.1 kW

+3 dBk ≈ 2 kW

Formula:

$$P\left(\text{kW}\right)={10}^{\frac{\text{dBk}}{10}}$$

dB to Watts Conversion Formulas

Convert dBm to Watts

$$P\left(W\right)={10}^{\frac{\text{dBm}-30}{10}}$$

Convert dBW to Watts

$$P\left(W\right)={10}^{\frac{\text{dBW}}{10}}$$

Convert dBk to Watts

Since:

$$1\text{kW}=1000\text{W}$$

First convert dBk → kW:

$$P\left(\text{kW}\right)={10}^{\frac{\text{dBk}}{10}}$$

Then convert kW → W:

$$P\left(W\right)=1000\times {10}^{\frac{\text{dBk}}{10}}$$

How to convert dB to Watts using our calculator?

1. Enter the “dB” value.
2. Select the unit,i.e., dBm, dBw, or dBk.
3. Click “Calculate” to find the Watt.