Music & Audio

Notes, tempo, intervals and audio calculations.

22 tools

Audio Bitrate / File Size Estimator Estimate audio file size from duration and bitrate.
BPM ↔ Milliseconds Converter Convert tempo between BPM and beat duration; show subdivisions and bar length.
Camelot Wheel Look up a key's Camelot notation and harmonic-mixing neighbours.
Capo Reverse Finder For any target chord, list every capo fret and easier shape that produces it.
Cents / Pitch Shift Calculator Convert between cents, semitones and frequency ratios.
Chord Builder & Reference Build chord voicings from a root and chord symbol.
Chord Progression Builder Render Roman-numeral chord progressions for any major or minor key.
Circle of Fifths Reference Major / relative-minor keys with their sharps and flats.
DAW Bar:Beat → Seconds Convert a DAW bar.beat.sixteenth position into elapsed seconds at any BPM.
Decibel Calculator Add or subtract incoherent dB levels and predict SPL at a new distance.
Drum Pattern Generator Generate a 16th-note grid for rock, funk, samba, trap, house or reggae grooves.
Frequency to MIDI Note Convert any frequency to its nearest MIDI note and pitch deviation in cents.
Key Transposer / Capo Calculator Transpose chord names up or down by semitones (capo positions).
Metronome Click-track metronome at any tempo with downbeat accent.
Music Modes Reference Diatonic modes (Ionian, Dorian, Phrygian, …) with interval patterns.
Musical Interval Calculator Map interval names to semitones, cents and frequency ratios.
Note Frequency Calculator Frequency in Hz for any musical note, with adjustable concert pitch.
Roman Numeral Chord Analyzer Map a chord progression into Roman numerals in a given key.
Scale Reference Notes in any common scale starting on any root.
Sound Pressure Level Reference Reference SPL levels (dB) for everyday sounds.
Tap Tempo Tap a button to measure the BPM of any rhythm.
Time Signature Duration Calculator Convert bars and time signatures into seconds at any BPM.