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SOUND CONVERSION

Bel to neper

1 bel = 1.1512925465 neper. Enter your value for an instant conversion.

Sound converter
YOUR RESULT
1 B=1.151292546Np

FormulaResult = value × 1.1512925465

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.

B to Np: the formula

Result = value × 1.1512925465

For example, 10 bel = 11.512925465 neper.

Enter a decimal, a fraction such as 1/2, or scientific notation such as 1e3. Choose how many significant digits to display using the precision control.

Keep the same unit convention throughout your calculation. Regional and historical unit definitions can differ.

Reverse: neper to bel →

Sources and calculation method →

B to Np table

belneper
1 B1.1512925465 Np
2 B2.30258509299 Np
3 B3.45387763949 Np
5 B5.75646273249 Np
10 B11.512925465 Np
20 B23.0258509299 Np
50 B57.5646273249 Np
100 B115.12925465 Np
500 B575.646273249 Np
1000 B1151.2925465 Np

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