Decibel Calculator for Audio (voltage)

If you don’t like formulas then you definitely won’t like the formula for calculating voltage ratios expressed in decibels.

So, use the following calculators to get a handle on the decibels with different input and outlet levels.

These calculators also show you the theoretical values for resistors to make your own inline audio attenuator, and a calculator to show you the actual dB attenuation with any two real world resistors.

Note: the calculator is best viewed in landscape mode on phones and small screens

For a better understanding of what all this means, read the articles on Understanding Decibels  Part 1 and Part 2.

For those who need to know, the basic formulas used for these calculators are :

and

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