dBm to Watts Conversion

This handy tool allows you to easily convert power in decibels (dBm) to watts. Simply enter the power in dBm into the input field, and our calculator will provide you with the equivalent result in watts in the output field. The calculator also includes convenient “Convert” and “Reset” buttons for easy use. Try it out now and make power conversions a breeze!

dBm to Watts Conversion Calculator

Like this? Please share:

Watts to dBm conversion calculator ►

How to Convert dBm to Watts?

The conversion of power from dBm to watts can be calculated using the following formula:

P_(W) = 1W ⋅ 10^{(P (dBm) / 10)} / 1000

This formula can be used to convert the power level of a signal measured in dBm to its equivalent wattage value. It is important to note that dBm is a logarithmic unit of measurement, which means that the difference between two power levels is calculated using a logarithm function. In contrast, watts are a linear unit of measurement, meaning that the difference between two power levels is calculated using simple arithmetic.

When working with radio frequency (RF) signals, it is common to use dBm as a unit of measurement because it provides a convenient way to express power levels over a wide range. This is particularly useful when working with small signal levels, where the difference in power between two signals can be very large.

Example

Let’s say you have a signal with a power of -23 dBm. To convert this to watts, you can use the following formula:

P_(W) = 1W ⋅ 10^{(P (dBm) / 10)} / 1000

Plugging in the value for dBm, we get:

P(watts) = 10^(-23/10) / 1000 = 0.0000050119 watts

So the power of the signal in watts is approximately 0.0000050119 watts.

This conversion is useful in the field of telecommunications and radio engineering, where power measurements are often expressed in dBm to simplify calculations and comparisons.