dB Converter

Convert between dBFS, dBu, dBV, dB SPL, volts, and watts instantly. Enter a value in any unit and see the equivalent in every other scale. Essential for gain staging, interfacing analog and digital gear, and understanding signal levels across different standards.

Common Reference Levels

Understanding dB Scales

Different dB scales exist because different fields need different reference points. dBu references 0.775 volts (the voltage that produces 1 mW into 600 ohms) and is the standard for professional analog audio equipment. dBV references 1.0 volt and is common in consumer electronics. dBFS is the digital scale where 0 is the absolute maximum — every signal in your DAW is measured in dBFS.

The relationship between +4 dBu (pro analog) and 0 dBFS (digital ceiling) depends on your interface calibration. Most pro interfaces align +4 dBu with -18 dBFS, giving you 18 dB of headroom above nominal level before digital clipping. This converter assumes that standard alignment.

Built by Seris Loom — utility-first audio tools for producers and engineers.