Decibels to Nepers (dB to Np)
Free online decibel to neper converter. Type a value, get an instant exact result — plus the formula, a ready-made conversion table, and reverse conversion.
SOUND CONVERTER — INSTANT RESULT
Formula: multiply the decibel value by 0.11512832 — i.e. Np = dB × 0.11512832
Quick check: 1 dB = 0.11512832 Np
Quick check: 1 dB = 0.11512832 Np
Decibels to Nepers conversion table
| Decibels (dB) | Nepers (Np) |
|---|---|
| 1 dB | 0.11512832 Np |
| 2 dB | 0.23025664 Np |
| 3 dB | 0.34538497 Np |
| 4 dB | 0.46051329 Np |
| 5 dB | 0.57564161 Np |
| 6 dB | 0.69076993 Np |
| 7 dB | 0.80589825 Np |
| 8 dB | 0.92102658 Np |
| 9 dB | 1.0361549 Np |
| 10 dB | 1.15128322 Np |
| 15 dB | 1.72692483 Np |
| 20 dB | 2.30256644 Np |
| 25 dB | 2.87820805 Np |
| 30 dB | 3.45384966 Np |
| 40 dB | 4.60513288 Np |
| 50 dB | 5.7564161 Np |
| 75 dB | 8.63462415 Np |
| 100 dB | 11.5128322 Np |
| 250 dB | 28.78208051 Np |
| 500 dB | 57.56416101 Np |
| 1,000 dB | 115.12832203 Np |
How to convert decibels to nepers
To convert decibels to nepers, multiply the amount in decibels by 0.11512832. For example, 10 dB = 1.15128322 Np. To convert in the other direction, divide by the same factor, or use the ⇄ swap button above.
Convert sound level units between bels, decibels and nepers. One bel equals 10 decibels; one neper equals about 8.686 dB.
Frequently asked questions
How many nepers are in one decibel?
One decibel is exactly 0.11512832 nepers.
How do I convert dB to Np?
Multiply the dB value by 0.11512832 to get Np. The converter at the top of this page does this automatically and works in both directions.
How much is 100 decibels in nepers?
100 decibels equals 11.5128322 nepers.