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Sound converter

Convert logarithmic level units: bels, decibels and nepers.

Sound converter
YOUR RESULT
1 B=10dB

FormulaResult = value × 10

Instant calculation

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.

Result = value × 10

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.

Read about sources and precision →

Quick conversion table

beldecibel
1 B10 dB
2 B20 dB
5 B50 dB
10 B100 dB
20 B200 dB
50 B500 dB
100 B1000 dB
1000 B10000 dB

Convert to every sound unit

Based on your input above
UnitSymbolResult
belB1
decibeldB10
neperNp1.151292546

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