Sound Level Converter
Convert between decibels (dB), intensity ratio, and power ratio instantly.
Type in any field and the others update automatically.
Type in any field — the others update instantly. Decibels are logarithmic.
Decibels use a logarithmic scale, not a linear one.
Formulas:
- dB = 10 × log₁₀(power ratio)
- dB = 20 × log₁₀(intensity/amplitude ratio)
- Power ratio = 10^(dB/10)
- Intensity ratio = 10^(dB/20)
Examples:
| dB | Power Ratio | Intensity Ratio |
|---|---|---|
| 0 | 1 | 1 |
| 3 | 2 | 1.41 |
| 6 | 3.98 | 2 |
| 10 | 10 | 3.16 |
| 20 | 100 | 10 |
| 40 | 10,000 | 100 |
| 60 | 1,000,000 | 1,000 |
Common sound levels:
- Whisper: 30 dB
- Normal conversation: 60 dB
- Rock concert: 110 dB