Sound converter
Convert logarithmic level units: bels, decibels and nepers.
FormulaResult = value × 10
This tool converts level units, not sound pressure to sound intensity. For an amplitude ratio, 1 neper = 20 / ln(10) decibels. A reference level is needed to recover a physical amplitude.
How to convert sound
Choose the original unit and the unit you need, then enter a value. You can also edit the result field to calculate in reverse.
Example: 1 bel = 10 decibel.
The displayed formula is rounded for readability. Calculations use the stored conversion factors; selecting more digits changes display precision, not the certainty of the source definition.
Quick conversion table
| bel | decibel |
|---|---|
| 1 B | 10 dB |
| 2 B | 20 dB |
| 5 B | 50 dB |
| 10 B | 100 dB |
| 20 B | 200 dB |
| 50 B | 500 dB |
| 100 B | 1000 dB |
| 1000 B | 10000 dB |
Convert to every sound unit
Based on your input above| Unit | Symbol | Result |
|---|---|---|
| bel | B | 1 |
| decibel | dB | 10 |
| neper | Np | 1.151292546 |