Convert between decibels and power ratio, or calculate the decibel difference between two sound levels. Decibels provide a convenient way to express very large or very small ratios.
Enter your values below
First power value
Second power value
Decibel value to convert
How this calculator works
Decibels equal 10 times the base-10 logarithm of the power ratio. A 10 dB increase represents a 10× increase in power, while 3 dB represents a 2× increase.
Common questions about this calculator
These calculators are for educational and informational purposes only. While we strive for accuracy, results should be verified for critical applications. Always consult authoritative sources for engineering or scientific work.
