Filter Attenuation Calculator
Calculate voltage gain in decibels from input and output RMS voltage magnitudes.
A QUICK WALKTHROUGH
How to use this tool
- Enter values in the stated matching units.
- Review the idealized formula and scope.
- Calculate locally in your browser.
Formula and limits
Gain (dB)=20log₁₀(Vout/Vin); attenuation may be reported as −gain when Vout<Vin. This is not a regulatory limit, equipment rating, or circuit safety review.
Privacy
Inputs are calculated locally and not uploaded.
GOOD TO KNOW
Common questions
Does this certify capacity or component suitability?
No. It evaluates the stated equation only.