SPL / dB Calculator
Convert between dBu, dBV, voltage, and calculate level differences.
Level Converter
Result
Level Difference
Difference
Common Reference Levels
| Level | dBu | dBV | V RMS | Use |
|---|---|---|---|---|
| +4 dBu | +4.0 | +2.22 | 1.228 | Pro audio nominal |
| 0 dBV | +2.22 | 0 | 1.000 | Consumer reference |
| 0 dBu | 0 | −2.22 | 0.775 | 0 dBu reference (600 Ω) |
| −10 dBV | −7.78 | −10 | 0.316 | Consumer nominal |
| Mic level | −60 to −40 | N/A | 1–10 mV | Microphone output |