Decibel Calculator

- simple to use calculator that converts two power levels into the decibel ratio.

The calculation of a power ratio in decibels requires the use of logarithms.

Our simple to use decibel calculator provides the calculation on your computer, be it a desktop, laptop or mobile device.

Simply enter the values for the input and output levels into the decibel calculator, press calculate, and the calculated answer will be provided.

Decibel calculator for power levels

Decibel Calculator for Power Levels


Enter Values:

Power Input:   Watts or milliwatts
Power Output:   Watts or milliwatts (Must be the same units as above)


Decibel Value:   dB

<< Previous   |   Next >>

Share this page

Want more like this? Register for our newsletter

The Advanced Smart Grid
The Advanced Smart Grid

Andres Carvallo, John Cooper
There is a huge degree of talk about the Smart Grid - what it is, how it works...
Read more . .

USA bookstore UK bookstore
Guidebooks for electronics engineers
Online - RF and Wireless Essentials for Engineers
This on-line course enables you to quickly get up-to-speed & understand key concepts of modern radio frequency, RF & wireless communications systems

More training courses

Books for electronics engineers
Bringing the Internet of Things to Life
Silicon Labs looks at the fact that industry experts predict that the number of connected devices for the Internet of Things (IoT) will surpass 15 billion nodes by 2015 and reach over 50 billion by 2020. Learn how to overcome the challenges of connecting intelligent nodes to the Internet of Things.

More whitepapers
 is operated and owned by Adrio Communications Ltd and edited by Ian Poole. All information is © Adrio Communications Ltd and may not be copied except for individual personal use. This includes copying material in whatever form into website pages. While every effort is made to ensure the accuracy of the information on, no liability is accepted for any consequences of using it. This site uses cookies. By using this site, these terms including the use of cookies are accepted. More explanation can be found in our Privacy Policy