Neper to bel
1 neper = 0.868588963807 bel. Enter your value for an instant conversion.
FormulaResult = value × 0.868588963807
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.
Np to B: the formula
For example, 10 neper = 8.68588963807 bel.
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.
Np to B table
| neper | bel |
|---|---|
| 1 Np | 0.868588963807 B |
| 2 Np | 1.73717792761 B |
| 3 Np | 2.60576689142 B |
| 5 Np | 4.34294481903 B |
| 10 Np | 8.68588963807 B |
| 20 Np | 17.3717792761 B |
| 50 Np | 43.4294481903 B |
| 100 Np | 86.8588963807 B |
| 500 Np | 434.294481903 B |
| 1000 Np | 868.588963807 B |