Music Calculators
Free music tools for every need. All calculations happen in your browser. No signup, no tracking.
BPM Calculator: Song Duration & Delay Time Converter
Convert BPM to delay times (ms), calculate song duration from beat count and tempo, and find tap tempo BPM. Essential for musicians, producers, and DJs.
Capo Transposer: Find Guitar Capo Chords & Shapes
Enter your chord progression and capo position to see the exact shapes to play, or transpose to find the capo fret that fits your voice. Free.
Chord Calculator: Identify Chords by Notes & Build Any Chord
Identify a chord from its notes or build any chord from a root. Shows notes, intervals, and inversions for major, minor, 7th, diminished, augmented chords.
Chord Progression Generator: Chords in Any Key
Generate chord progressions in any key by mood: happy, sad, epic, or jazzy. Get chords, roman numerals, and notes for songwriting inspiration.
Chord Transposer: Transpose Chord Charts Up or Down
Paste any chord chart and transpose it up or down by semitones. Preserves chord qualities, slash chords, sharps and flats automatically.
Circle of Fifths: Interactive Key Explorer
Click any key on the circle of fifths to see its key signature, relative minor, scale notes, and diatonic chords. Play scales with built-in audio.
Delay Time Calculator: BPM to Milliseconds Chart
Convert BPM to delay times in ms for quarter, eighth, dotted, triplet, and sixteenth subdivisions. Essential for synced delays and reverb pre-delay.
Diatonic Chord Finder: All 7 Chords in Any Key
Enter any key to see all seven diatonic chords with roman numerals, notes, and chord qualities. Works for major and minor keys.
Frequency to Note Converter: Hz to Musical Note Online
Convert any frequency in Hz to its nearest musical note. Shows note name, octave, cents deviation, and 12-tone equal temperament frequency.
Fretboard Note Trainer: Guitar Quiz & Memorization
Learn every note on the fretboard with a scored quiz. Random notes light up, you identify them, and track your score and streak. Free trainer.
Interval Calculator: Name Any Music Interval
Find the interval between any two musical notes. Shows interval name, quality (major/minor/perfect), number of semitones, and frequency ratio.
Interval Ear Trainer: Identify Musical Intervals by Ear
Train your musical ear with an interactive interval quiz. Hear random intervals, guess the answer, and track your score across three levels.
Nashville Number Chart Generator: Chords to Numbers and Back
Convert chord progressions into Nashville Number System notation and transpose to any key instantly. Enter chords, get the number chart, see the new key.
Note to Frequency Calculator: Musical Note to Hz Converter
Convert any musical note and octave to its exact frequency in Hz. Supports all 12 notes across 9 octaves with custom concert pitch (A4 tuning) settings.
Online Drum Machine: Free 16-Step Sequencer in Your Browser
Free online drum machine with synthesized kick, snare, clap, and hi-hats. Build 16-step patterns, adjust tempo and swing, no downloads needed.
Online Metronome with Warmup: Web Metronome Free
Free online metronome with gradual tempo increase (warmup mode). Set your BPM, time signature, and accent pattern. Uses Web Audio API for precise timing.
Scale Generator: Notes for Any Musical Scale and Root
Generate the notes for any major, minor, modal, pentatonic, blues, or other scale. Shows all scale notes, intervals, and relative key information.
Setlist Time Planner: Build a Gig Setlist with Total Runtime
Plan a live setlist with song durations, set breaks, and buffer time. Get the total runtime, start and end times, and a minute-by-minute schedule you can copy.
Song Key Finder: Identify a Song's Key from Its Chords
Enter the chords of any song and find its most likely key. Scores all 12 major and 12 minor keys by how many chords fit, with a ranked confidence list.
Tap Tempo: Find the BPM of Any Song by Tapping
Tap along with any beat to measure its tempo in BPM. Uses a rolling average of your taps with a stability readout, plus keyboard support via the spacebar.
Tuning Temperament Calculator: 12-TET vs Just Intonation
Compare note frequencies across tuning systems: 12-TET, just intonation, Pythagorean, and meantone. Calculate cent deviations between temperaments.
Vocal Range Finder: Discover Your Range and Voice Type
Use your microphone to find the lowest and highest notes you can sing. See your range in notes and semitones, and find your voice type, soprano to bass.