Decibel to Gain Ratio Converter
Fill in the value and the answer updates as you type.
How the Decibel to Gain Ratio Converter works
Amplitude ratio = 10^(dB ÷ 20) and power ratio = 10^(dB ÷ 10). A gain of +6 dB roughly doubles voltage and quadruples power. A common rule of thumb says +10 dB sounds about twice as loud, which is where the perceived ratio comes from, though real perception varies with frequency and level. Example: with Gain or level change 6 dB, the result is Voltage or amplitude ratio = 1.9953; Power ratio = 3.9811; Change in amplitude = 99.53%.
Inputs and results
The Decibel to Gain Ratio Converter takes 1 input and gives 5 results.
What you enter
- Gain or level change (dB) — starts at 6.
What you get
- Voltage or amplitude ratio
- Power ratio
- Change in amplitude
- Change in power
- Rough perceived loudness ratio
Example: Decibel to Gain Ratio Converter with the starting values
With gain or level change 6 dB, the calculator returns:
| Voltage or amplitude ratio | 1.9953 |
|---|---|
| Power ratio | 3.9811 |
| Change in amplitude | 99.53% |
| Change in power | 298.11% |
| Rough perceived loudness ratio | 1.52 |
Change any value above and the results update straight away.
Decibel to Gain Ratio Converter FAQ
How do I use the Decibel to Gain Ratio Converter?
Enter gain or level change in the fields, then read voltage or amplitude ratio, power ratio, change in amplitude and change in power in the result panel. The answer updates as you type, and you can press Calculate or Enter to refresh it. Use “Copy link” to share your exact numbers with someone else.
What does the Decibel to Gain Ratio Converter calculate?
Turn a dB change into voltage, power, and loudness ratios. It returns voltage or amplitude ratio, power ratio, change in amplitude and change in power from the 1 value you provide.
What values does the Decibel to Gain Ratio Converter start with?
It opens with gain or level change 6 dB so you can see a working result straight away. Replace them with your own numbers, or press Reset to return to these starting values.
Is the Decibel to Gain Ratio Converter free and private?
Yes. It is free, needs no account, and runs in your browser, so nothing you type is sent to or stored on our servers. See the Privacy Policy for details.
Can I rely on the Decibel to Gain Ratio Converter for important decisions?
Treat the result as a well-rounded estimate. Real situations often have details a general calculator cannot know, so confirm important decisions with a qualified professional. See the Disclaimer for more.