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Ratio to Decibel Calculator

Ratio to Decibel Calculator

Ratio to Decibel Calculator

Convert a ratio to decibels using: $$ \text{dB} = \begin{cases} 10\log_{10}(\text{ratio}) & \text{(Power Ratio)} \\ 20\log_{10}(\text{ratio}) & \text{(Voltage Ratio)} \end{cases} $$

Step 1: Enter Parameters

e.g., 2 (unitless)

For a power ratio: $$ \text{dB} = 10\log_{10}(\text{ratio}) $$
For a voltage ratio: $$ \text{dB} = 20\log_{10}(\text{ratio}) $$

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