Slow Down a Song Online — Slowed Effect, Pitch Preserved
Slow any track to 0.75× or 0.5× in your browser. Pitch is preserved — no demonic bass voice. Free MP3 / WAV export, no signup.
Drop an audio file here or pick one
MP3, WAV, M4A, OGG, FLAC, AAC — up to ~150 MB
About slowing down songs online
Drop a track, drag the tempo slider into the 0.5-1.0× range, and the tool slows it down without dropping pitch. You get the TikTok-style slowed vibe — no demonic-bass voice from naive playbackRate hacks.
For a heavier slowed+reverb feel, open the pitch slider and drop 1-3 semitones (reverb itself can be added after export in any video editor).
All processing happens in your browser. The MP3 encoder is lamejs, WAV export is bit-perfect lossless.
When this helps
Slowed & reverb edit
Base slowed version for a TikTok, Reel, or Short — in under a minute.
Learning a song on an instrument
Halve the speed to hear every note while keeping the original key.
Complex dance choreography
Slowing the track helps you break moves down step-by-step.
Lyric transcription
A slowed track is easier to parse by ear for lyric breakdowns.
Frequently asked questions
Will voices sound demonically deep, like with playbackRate?
No. The tool uses time-stretch which lengthens the audio in time without dropping pitch. Voices sound normal.
What's the maximum slow-down?
Down to 0.5× (half speed). For more extreme slowdowns, combine with a pitch drop of 1-3 semitones.
Can I slow down and drop pitch at once?
Yes. Click 'Also change pitch' to reveal the second slider.
Is my file uploaded anywhere?
No. Everything runs in your browser — nothing leaves your device.