Music & Audio tools
Music and audio calculators for the studio and the stage, tempo and timing, pitch and tuning, audio file sizes, and levels. Everything runs instantly in your browser, with nothing to install.
Popular Music & Audio tools
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BPM to Delay Calculator
Turn any tempo into tempo-synced delay and reverb times, quarter, eighth, dotted and triplet note values in milliseconds, with their matching frequencies. Runs in your browser.
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Tap Tempo
Tap a button or the space bar in time with any music to read its tempo in BPM, averaged over your taps for a steady result. Runs entirely in your browser.
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Metronome
A simple online metronome, set the tempo and beats per bar and it clicks in time using the Web Audio clock, accenting the first beat of each bar. Runs in your browser.
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Time Signature Calculator
Convert bars to seconds for any time signature and tempo, find a section’s length, seconds per bar and total beats. Runs entirely in your browser.
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Note Frequency Calculator
Find the exact frequency of any musical note in any octave, with its MIDI number, wavelength and period. Retune the A4 reference to 432 Hz or any value. Runs in your browser.
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Note to MIDI Converter
Convert between note names and MIDI numbers in both directions, with the frequency for each. Middle C is C4 (MIDI 60) and A4 is MIDI 69. Runs in your browser.