Decibel (dB) Calculator

Decibel is defined as ten times the logarithm of a power ratio. Or twenty times the logarithm of a voltage (current) ratio. This calculator converts between decibels for a voltage (current) ratio or effect ratio. Just fill in one field and press Convert. The calculator will convert the other two fields.

      dB = 20log10(V1/V2)    og           20log10(I1/I2)              eller        10log10(P1/P2)
Decibels (dB)
Voltage Gain (V1/V2)
Power Gain (P1/P2)

In the case of a damping insert dB as a negative number.

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