Convert decibel (amplitude)s to decibel (power)s

0.5dB
≈ Approximate 1 dB ≈ 0.5 dB
As a fraction: 1/2
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Show this value in all 10 ratio & decibels units
  • 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 decibel (power)s

Convert through a plain ratio: decibel (amplitude) → ratio → decibel (power). 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.

Decibel (power): Ten times the base-10 log of a power ratio. 3 dB is roughly double the power.

Decibel (amplitude) to Decibel (power) conversion table

Decibel (amplitude)s (dB) Decibel (power)s (dB)
0 dB 0
1 dB 0.5
2 dB 1
3 dB 1.5
6 dB 3
10 dB 5
20 dB 10
30 dB 15
40 dB 20
60 dB 30
80 dB 40
100 dB 50

Decibel (power) to Decibel (amplitude) conversion table

Decibel (power)s (dB) Decibel (amplitude)s (dB)
0 dB 0
1 dB 2
2 dB 4
3 dB 6
6 dB 12
10 dB 20
20 dB 40
30 dB 60
40 dB 80
60 dB 120
80 dB 160
100 dB 200

Frequently asked

How many decibel (power)s are in a decibel (amplitude)?

One decibel (amplitude) equals 0.5 decibel (power)s (dB → dB).

How do you convert decibel (amplitude)s to decibel (power)s?

Convert through a plain ratio: decibel (amplitude) → ratio → decibel (power). Logarithmic units cannot be converted by multiplying alone.

What is 1 dB in decibel (amplitude)s?

One decibel (power) is 2 decibel (amplitude)s.

What is 10 dB in dB?

10 dB = 5 dB.

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 decibel (power)?

Ten times the base-10 log of a power ratio. 3 dB is roughly double the power.

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