Music & Audio calculators
Metronome, BPM, note frequency, chord transposing, speaker impedance and room acoustics.
28 free tools
Most used
Chord FinderSee the notes, guitar shape and piano keys for any chordChord TransposerPaste a chord chart and move it to any key in one clickNote Frequency CalculatorConvert any note to Hz, or any frequency to the nearest note and centsOnline MetronomeA free, accurate metronome with accents, subdivisions and tap tempoOnline Tone GeneratorPlay a pure tone at any frequency from 1 Hz to 20 kHzTap Tempo BPM CounterTap along to any song to find its BPM in seconds
More music & audio tools
Audio File Size CalculatorWork out WAV, AIFF, MP3 or AAC file sizes before you record or exportBPM to Milliseconds CalculatorTempo-synced delay and reverb times in ms and Hz for every note valueCapo CalculatorFind the capo fret and easy chord shapes for any song keyChord Progression GeneratorTurn roman-numeral progressions into real chords in any key, and hear themFret Position CalculatorExact fret positions from the nut for any scale length and fret countGuitar Tuning Reference TonesPlay the exact pitch of every string for guitar, bass and ukulele tuningsInteractive Circle of FifthsClick any key to see its signature, relative minor and diatonic chordsMusic Interval CalculatorName the interval between any two notes, with inversion and ratioMusic Scale GeneratorNotes, step pattern and chords for any scale or mode in any keySong Key FinderPaste a chord progression and find the key it is most likely inSong Length & Bars CalculatorTurn bars and BPM into song length — or time into bars and tempoSpeaker Impedance CalculatorFind the total ohm load of speakers wired in series, parallel or bothStreaming Royalty CalculatorSee what your streams pay after distributor, label and band splitsSubwoofer Box CalculatorSealed or ported sub box volume, tuning and port length from T/S specsVirtual PianoPlay a piano in your browser with your mouse, touch or computer keyboardWhite Noise GeneratorPlay white, pink or brown noise in your browser with a sleep timerGuitar String Tension CalculatorFind string tension from scale length, pitch and unit weightPitch Shift & Speed CalculatorConvert playback speed to semitones and cents, or semitones to speedReverb Time (RT60) CalculatorEstimate RT60 from room size and surface materials with SabineRoom Mode CalculatorFind standing-wave frequencies and bass problem spots in any roomStreaming Loudness Normalization CalculatorSee how much Spotify turns your master up or down from its LUFSTempo Change CalculatorBPM to BPM: percent change, new song length and pitch shift