Free · no sign-in

Tools

Find the key and BPM of a sound, change its key and tempo while it plays, find samples here that fit your track, and convert files to MP3, WAV, FLAC or OGG.

Everything runs in your browser. Your file is never uploaded and is gone when you leave the page. Only use audio you made or have the rights to.

Drop a sound here, or click to choose oneWAV, MP3, FLAC, AAC or OGG, up to 15 minutes. It stays on your device.

Key and BPM

Key

Or set it yourself

BPM

Or set it yourself

Tap along, 4 taps or more

Change key and tempo

Add a sound above to play it in another key or tempo.

Samples that fit

Add a sound, or set a key or BPM above, to see samples that fit it.

Loading…

Convert files

Drop an audio or video file here, or click to choose oneWAV, MP3, AIFF, FLAC, OGG, M4A, or the sound from MP4, MOV and WebM videos. Up to 500 MB and 30 minutes.

Convert to

MP3WAVFLACOGG

QualitySample rate

MP3 is much smaller and loses a little detail. At 320 kbps it sounds the same as the original to almost everyone.