Music & Audio

Notes, tempo, intervals and audio calculations.

32 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 Identifier Name the chord(s) formed by a set of notes.
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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.
Delay & Reverb Time Calculator Convert BPM into tempo-synced delay times and reverb pre-delay and decay.
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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.
Fretboard Note Finder Map every note on a guitar, bass or ukulele fretboard for any tuning.
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Guitar Chord Diagram Generate an SVG chord-chart diagram from a 6-string guitar fingering like x32010.
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Key Finder from Notes Find which major and minor keys contain a given set of notes.
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Key Transposer / Capo Calculator Transpose chord names up or down by semitones (capo positions).
LUFS Loudness Target Calculator Calculate the gain to hit Spotify, YouTube, Apple and broadcast LUFS loudness targets.
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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.
Nashville Number System Converter Convert chord progressions to Nashville numbers and back for any key.
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Note Frequency Calculator Frequency in Hz for any musical note, with adjustable concert pitch.
Polyrhythm Calculator Find the combined grid and timing of an a:b polyrhythm at a given tempo.
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Roman Numeral Chord Analyzer Map a chord progression into Roman numerals in a given key.
Sample Rate & Bit Depth Reference Look up common audio sample rates and bit depths and where they're used.
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Scale Reference Notes in any common scale starting on any root.
Sound Pressure Level Reference Reference SPL levels (dB) for everyday sounds.
String Tension Calculator Calculate guitar and bass string tension from gauge, scale length and pitch.
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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.