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... Bel = ... Decibel
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Bel to Decibel Converter
Use this page to convert bel values into decibel, with background details, formulas, a worked example, and a quick conversion table.
Conversion formula
1 B = 10 dB
1 dB = 0.1 B
Example: 8 B = 80 dB
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Bel
A logarithmic unit used to express the ratio of a physical quantity to a specified or implied reference level.
History: Named after Alexander Graham Bell.
Current use: Rarely used directly; the decibel is much more common.
Also written as B, bels.
Decibel
The most common unit for expressing sound level.
History: The decibel grew from telephone and audio engineering as a practical tenth-of-a-bel scale.
Current use: Acoustics, electronics, control theory.
Also written as dB, decibels, db.
Bel to Decibel table
| Bel [B] | Decibel [dB] |
|---|---|
| 0.01 B | 0.1 dB |
| 0.1 B | 1 dB |
| 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 | 1,000 dB |
Frequently asked questions
How many Decibel (dB) are in one Bel (B)?
One Bel equals 10 Decibel.
How do you convert Bel to Decibel?
Multiply the Bel value by 10 to get the result in Decibel.
How do you convert Decibel back to Bel?
Multiply the Decibel value by 0.1 to get back to Bel.
What is 8 Bel in Decibel?
8 Bel equals 80 Decibel.