onemaker.io

Change the speed of any song

Faster or slower with the key kept. Free, no signup, the whole song.

How it works

about a minute

  1. Drop your song

    Any of the formats listed, up to 200 MB. It goes straight to storage — never through our web server.

  2. Say how fast

    A speed (×0.5 to ×2, the key kept), a target BPM (we read the song's own tempo first), or a preset — sped up, slowed + reverb, nightcore.

  3. Download, or make a video

    One file back, on a player. Then add it in the editor's Audio tab — the beat lines up with what you set.

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Questions

Is it really free?
Yes — no signup, no watermark, the whole song. The 200 MB limit exists to stop abuse, not to sell you a plan.
Will the key change?
Not with a speed or a target BPM — the beat moves, the notes stay. The presets are different on purpose: sped up and nightcore ARE the pitch riding along with the speed, the way those edits actually sound.
Target BPM says it can't find a beat — why?
Speech, ambient tracks and some very sparse songs have no steady pulse to measure. Use a speed instead — it needs no tempo to start from.
What happens to my song?
Your upload is deleted the moment the change finishes. The result stays for 24 hours so you can come back for it, then it is deleted too.