CalcChef tool collection
Audio Tools
Convert audio, generate tones, tune an instrument, or keep time without uploading files to a server.
Start with these tools
Audio Converter
Convert audio, or the sound of a video, to WAV or MP3 at 64 to 320 kbps, in mono or stereo at 22.05 to 48 kHz. Files up to 100 MB and 10 minutes.
Audio Tone Generator
Play a sine, square, sawtooth, triangle or noise tone from 20 Hz to 20,000 Hz, sweep it, read the nearest note and save it as a WAV file.
Guitar Tuner
Tune a guitar, bass or ukulele with your microphone: nearest string, pitch in Hz, cents flat or sharp, seven guitar tunings and a chromatic mode.
Metronome
Online metronome from 40 to 240 BPM with 1 to 12 beats over /4 or /8, accents, eighth and triplet clicks, a speed trainer and tap tempo.
All Audio Tools
5 free browser-based tools
Audio Converter
Convert audio, or the sound of a video, to WAV or MP3 at 64 to 320 kbps, in mono or stereo at 22.05 to 48 kHz. Files up to 100 MB and 10 minutes.
Audio Tone Generator
Play a sine, square, sawtooth, triangle or noise tone from 20 Hz to 20,000 Hz, sweep it, read the nearest note and save it as a WAV file.
BPM Counter
Find a song's tempo by tapping each beat, by analysing an audio file or by listening through the microphone. Taps read 40 to 400 BPM.
Guitar Tuner
Tune a guitar, bass or ukulele with your microphone: nearest string, pitch in Hz, cents flat or sharp, seven guitar tunings and a chromatic mode.
Metronome
Online metronome from 40 to 240 BPM with 1 to 12 beats over /4 or /8, accents, eighth and triplet clicks, a speed trainer and tap tempo.