Decibel and Gain Ratio Converter
Convert between decibels and linear power or amplitude ratios using the correct logarithmic factor.
Decibel and Gain Ratio Converter User manual
- Fill in the parameters or select the file according to the form, and check the unit and format first.
- A power ratio of 100 is 20 dB. An amplitude ratio of 10 at equal impedance is also 20 dB.
- Click the processing button to view the results, you can copy or download and save.
Calculation method and processing rules
Use 10log10 for power ratios and 20log10 for amplitude ratios. Supports positive gain and negative attenuation.
scope of use
The amplitude formula assumes equal reference impedances. Results are not absolute sound pressure levels or dBm.
Will the input content be saved on the server?
This tool handles input in the browser, and does not upload files or form content. Typing practice scores are only saved in the native browser.
Why may the result be different from other tools?
The amplitude formula assumes equal reference impedances. Results are not absolute sound pressure levels or dBm. Please compare the input unit, rounding method, applicable rules and data version first.