Uwarp

Output is MP3. The first run downloads FFmpeg once in this browser.

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Speed up songs online

Speed up songs online from 0.5× to 2× and download an MP3 at the original pitch. Local-first. No signup.

What is speed up songs online?

Speed up songs online means changing how fast a track plays and downloading the result. This free local-first tool sets tempo from 0.5× to 2× and saves an MP3 with the original pitch—no signup. Upload MP3, M4A, WAV, or a video and keep the audio only.

Speed up songs features

Change song tempo and save an MP3.

  • Speed up or slow down

    0.5× through 2×, with presets at 0.5×, 0.75×, 1.25×, 1.5×, and 2×.

  • Original pitch

    Tempo changes. The key of the vocal and instruments stays the same.

  • MP3 download

    Listen in the page, then save the sped-up song.

  • Audio or video input

    MP3, M4A, WAV, MP4, MOV, or WebM. Video files export audio only.

How to speed up a song

From a file to a faster MP3.

  1. Upload the song

    Drop an audio file, or a video if the song is inside it.

  2. Set the speed

    Use a preset or the slider. 1.5× is the starting point.

  3. Download the MP3

    Play the result, then save it when the tempo sounds right.

Tips for song speed

Keep the result listenable.
  • 01

    Start at 1.25× or 1.5×

    Those rates speed a song up without rushing the vocal too hard.

  • 02

    2× is the top

    The single tempo filter used here stays inside 0.5× to 2×.

  • 03

    Video files lose the picture

    The MP3 is the soundtrack. Use Speed Up Video when you need the picture too.

  • 04

    Change the speed, then convert again

    A new speed clears the previous MP3 so the download matches the slider.

Great for

When a song should play faster.

  • Practice

    Hear a passage at a quicker tempo while the key stays the same.

  • Playlists

    Save a slightly faster MP3 for a workout or a commute.

  • Learning lyrics

    Slow the track to 0.75× and follow the words.

Why speed songs up here

A local tempo change for songs.

  • Free

    Unlimited conversions with no signup.

  • Local-first

    The song is processed in the browser.

  • Pitch held

    Faster tempo without shifting the song into a new key.

  • MP3

    A file you can drop into a player or a playlist.

Technical notes

How the tempo change is made.
Filter
FFmpeg atempo, one stage, between 0.5 and 2.
Output
MP3 via libmp3lame at 192 kbps. Video tracks are dropped.
Size limit
200 MB per file.
Privacy
Client-side FFmpeg. The song is not uploaded to a server.

Sources & References

FFmpeg tempo filter reference.
  • “The filter accepts exactly one parameter, the audio tempo. If not specified then the filter will assume nominal 1.0 tempo. Tempo must be in the [0.5, 100.0] range.”
    — FFmpeg Filters Documentation — atempo

    FFmpeg — atempo: The tempo control this page applies before writing the MP3. ffmpeg.org/ffmpeg-filters.html#atempo

  • “Note that tempo greater than 2 will skip some samples rather than blend them in. If for any reason this is a concern it is always possible to daisy-chain several instances of atempo to achieve the desired product tempo.”
    — FFmpeg Filters Documentation — atempo

    FFmpeg — tempo above 2: Why this tool stops at 2× instead of chaining filters past that rate. ffmpeg.org/ffmpeg-filters.html#atempo

Frequently Asked Questions

Quick answers about this tool—open a question to read more.