Convert semitones to decibel (power)s
More converter tools
Readable results
Ranges, ± tolerances, feet/inches and clock durations work in the value field.
Unit picker
Export this result
Show this value in all 10 ratio & decibels units
- Ratios × 1.059 463 094 36
- Decibel (power)s dB 0.250 858 329 72
- Decibel (amplitude)s dB 0.501 716 659 44
- Bels B 0.025 085 832 972
- Nepers Np 0.057 762 265 046 7
- Decades dec 0.025 085 832 972
- Octaves oct 0.083 333 333 333 3
- Semitones st 1
- Cents ¢ 100
- Stop (photographic)s EV 0.083 333 333 333 3
Every row is Semitone (st) converted through the ratio, in exact rational arithmetic.
How to convert semitones to decibel (power)s
Convert through a plain ratio: semitone → ratio → decibel (power). Logarithmic units cannot be converted by multiplying alone.
Semitone: Twelve-tone equal temperament: each semitone is the twelfth root of two.
Decibel (power): Ten times the base-10 log of a power ratio. 3 dB is roughly double the power.
Semitone to Decibel (power) conversion table
| Semitones (st) | Decibel (power)s (dB) |
|---|---|
| 0 st | 0 |
| 1 st | 0.250 858 33 |
| 2 st | 0.501 716 66 |
| 3 st | 0.752 574 99 |
| 6 st | 1.505 15 |
| 10 st | 2.508 583 3 |
| 20 st | 5.017 166 6 |
| 30 st | 7.525 749 9 |
| 40 st | 10.034 333 |
| 60 st | 15.0515 |
| 80 st | 20.068 666 |
| 100 st | 25.085 833 |
Decibel (power) to Semitone conversion table
| Decibel (power)s (dB) | Semitones (st) |
|---|---|
| 0 dB | 0 |
| 1 dB | 3.986 313 7 |
| 2 dB | 7.972 627 4 |
| 3 dB | 11.958 941 |
| 6 dB | 23.917 882 |
| 10 dB | 39.863 137 |
| 20 dB | 79.726 274 |
| 30 dB | 119.589 41 |
| 40 dB | 159.452 55 |
| 60 dB | 239.178 82 |
| 80 dB | 318.9051 |
| 100 dB | 398.631 37 |
Frequently asked
How many decibel (power)s are in a semitone?
One semitone equals 0.2508583297 decibel (power)s (st → dB).
How do you convert semitones to decibel (power)s?
Convert through a plain ratio: semitone → ratio → decibel (power). Logarithmic units cannot be converted by multiplying alone.
What is 1 dB in semitones?
One decibel (power) is 3.986313714 semitones.
What is 10 st in dB?
10 st = 2.508 583 3 dB.
What exactly is a semitone?
Twelve-tone equal temperament: each semitone is the twelfth root of two.
What exactly is a decibel (power)?
Ten times the base-10 log of a power ratio. 3 dB is roughly double the power.