Convert decibel (amplitude)s to nepers
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- Ratios × 1.122 018 454 3
- Decibel (power)s dB 0.5
- Decibel (amplitude)s dB 1
- Bels B 0.05
- Nepers Np 0.115 129 254 65
- Decades dec 0.05
- Octaves oct 0.166 096 404 744
- Semitones st 1.993 156 856 93
- Cents ¢ 199.315 685 693
- Stop (photographic)s EV 0.166 096 404 744
Every row is Decibel (amplitude) (dB) converted through the ratio, in exact rational arithmetic.
How to convert decibel (amplitude)s to nepers
Convert through a plain ratio: decibel (amplitude) → ratio → neper. Logarithmic units cannot be converted by multiplying alone.
Decibel (amplitude): For voltage, pressure and other field quantities. 6 dB is roughly double the amplitude — and the same fourfold change in power.
Neper: The natural-log counterpart to the decibel. 1 Np ≈ 8.686 dB (amplitude).
Decibel (amplitude) to Neper conversion table
| Decibel (amplitude)s (dB) | Nepers (Np) |
|---|---|
| 0 dB | 0 |
| 1 dB | 0.115 129 25 |
| 2 dB | 0.230 258 51 |
| 3 dB | 0.345 387 76 |
| 6 dB | 0.690 775 53 |
| 10 dB | 1.151 292 5 |
| 20 dB | 2.302 585 1 |
| 30 dB | 3.453 877 6 |
| 40 dB | 4.605 170 2 |
| 60 dB | 6.907 755 3 |
| 80 dB | 9.210 340 4 |
| 100 dB | 11.512 925 |
Neper to Decibel (amplitude) conversion table
| Nepers (Np) | Decibel (amplitude)s (dB) |
|---|---|
| 0 Np | 0 |
| 1 Np | 8.685 889 6 |
| 2 Np | 17.371 779 |
| 3 Np | 26.057 669 |
| 6 Np | 52.115 338 |
| 10 Np | 86.858 896 |
| 20 Np | 173.717 79 |
| 30 Np | 260.576 69 |
| 40 Np | 347.435 59 |
| 60 Np | 521.153 38 |
| 80 Np | 694.871 17 |
| 100 Np | 868.588 96 |
Frequently asked
How many nepers are in a decibel (amplitude)?
One decibel (amplitude) equals 0.1151292546 nepers (dB → Np).
How do you convert decibel (amplitude)s to nepers?
Convert through a plain ratio: decibel (amplitude) → ratio → neper. Logarithmic units cannot be converted by multiplying alone.
What is 1 Np in decibel (amplitude)s?
One neper is 8.685889638 decibel (amplitude)s.
What is 10 dB in Np?
10 dB = 1.151 292 5 Np.
What exactly is a decibel (amplitude)?
For voltage, pressure and other field quantities. 6 dB is roughly double the amplitude — and the same fourfold change in power.
What exactly is a neper?
The natural-log counterpart to the decibel. 1 Np ≈ 8.686 dB (amplitude).