Music & audio
tools and calculators.
23 practical tools with clear inputs and explanations. Choose a tool below, or explore a role-based toolbox for a collection that fits your day.
WAV waveform & trimmer
Inspect a waveform, choose a region, preview it and download a trimmed WAV locally.
Musical note frequency
Find a note’s frequency and MIDI number with adjustable concert pitch.
Frequency to musical note
Find the nearest equal-tempered note and its tuning offset.
Musical interval calculator
Compare two notes in semitones, octaves and frequency ratio.
Note list transposer
Move a list of octave-labelled notes by a chosen number of semitones.
Musical scale builder
Build a scale with correctly ordered note-letter spellings.
Chord note calculator
Find the notes and frequencies of common root-position chords.
Guitar fretboard note finder
List the notes across frets for your own open-string tuning.
Instrument fret position calculator
Calculate equal-tempered fret positions along a supplied scale length.
Ideal string tension calculator
Estimate tension from vibrating length, frequency and linear density.
Tempo & delay time calculator
Get straight, dotted and triplet note lengths for a quarter-note BPM.
Bars, beats & duration
Convert bars to elapsed time or elapsed time into bars and beats.
Audio file size estimator
Estimate uncompressed PCM size or fixed-bitrate encoded audio size.
Audio samples & time
Translate sample-frame counts and durations at a chosen sample rate.
Sample-rate playback change
See the pitch and duration effect of reinterpreting a recording’s sample rate.
Decibels & linear ratio
Convert gain in dB to a linear amplitude or power ratio, and back.
Add independent sound levels
Combine uncorrelated sound levels measured using the same reference.
Axial room mode calculator
Explore ideal axial resonances along a rectangular room’s three dimensions.
Speaker distance delay
Translate a path-length difference into an acoustic alignment delay.
Swing timing calculator
Split a pair of eighth notes into a chosen long-short timing ratio.
Polyrhythm timing grid
See where two equal subdivisions meet across one practice cycle.
Loudness gain & peak headroom
Estimate a gain-only loudness adjustment against a supplied true-peak ceiling.
Tempo speed-change calculator
Compare tempo, duration and pitch when playback speed changes.