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Saor Audio Speed Changer

Speed up or slow down audio with the pitch preserved (great for podcasts) or shifted. Export as MP3. Runs entirely in your browser, no upload.

Gan teorainn méid comhaidFanann comhaid príobháideachNíl gá le logáil isteachSaor in aisce go deo

Buail comhaid anseo, nó cliceáil chun brabhsáil

MP3, WAV, FLAC, OGG, AAC, M4A, Audio gan teorainn méid comhaid

Brabhsáil comhaid

Ní fhágann do chomhaid do ghléas riamh. Tarlaíonn gach próiseáil go háitiúil i do bhrabhsálaí.

Speed up or slow down audio — keep the natural pitch (great for podcasts and audiobooks) or shift the pitch. Runs entirely in your browser.

Optimize for your platform

Speed Up a PodcastSpeed Up an AudiobookMake a Nightcore / Sped-Up EditMake a Slowed + Reverb EditSlow Down Audio for Transcription

Conas a Oibríonn sé

Changing audio speed can either keep the pitch natural (so a sped-up voice doesn't sound like a chipmunk) or shift it (the classic record speed-up). This does both with FFmpeg in your browser.

  1. 1
    FFmpeg.wasm loads once
    The WebAssembly build downloads on first use and is cached afterwards.
  2. 2
    You pick a speed and pitch mode
    From 0.5× to 3×, with "keep natural pitch" on or off. The file stays in your browser.
  3. 3
    FFmpeg re-times the audio
    Natural-pitch mode uses chained atempo filters (time-stretch); pitch-shift mode uses asetrate (speeds and pitches together).
  4. 4
    Download the MP3
    The result is encoded to MP3 and previewed with the built-in player.

Speed up a podcast or audiobook, or make a "slowed + reverb"/"nightcore" edit, entirely on your device — nothing is uploaded.

Cén fáth ár gceann a úsáid?

✓Completely free — no hidden costs, ever
✓No account, email, or login required
✓Files stay on your device — processing happens in your browser
✓Works on any device — phone, tablet, desktop
✓No watermarks on any output
✓Browser memory limits may apply for very large files

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Comhbhrúigh comhaid físe chun a méid a laghdú. Roghnaigh cáilíocht, réiteach, agus formáid aschuir. Tá gach próiseáil áitiúil.

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