Speed Up Audio
Make a podcast, lecture, voice memo, or song play faster without the chipmunk effect. Pick a speed from 1.1x to 2x. It runs in your browser, so your file never leaves your device.
How to speed up audio
- Drop in an audio file (MP3, WAV, M4A, FLAC, OGG, or AAC).
- Pick a speed between 1.1x and 2x.
- Keep the original pitch, or choose tape style to let the pitch rise with the speed.
- Press Speed up, listen to the preview, then download it as MP3 or WAV.
Faster, without the chipmunk voice
Play a recording faster the simple way, the way a turntable or tape deck does it, and everything rises in pitch along with the tempo. Voices turn squeaky and a song jumps into a new key. This tool avoids that by default. It uses FFmpeg’s atempo filter, a time-stretching algorithm that works through the audio in small overlapping slices, so the tempo goes up while the pitch stays where it was.
If you do want the classic sped-up sound, where the pitch climbs with the speed, pick tape style. That is the effect behind sped-up song edits and nightcore, and it tends to sound brighter and more urgent than a clean time stretch.
What people speed up, and how fast to go
Spoken audio is the most common job. Podcasts, lectures, audiobooks, recorded meetings, and long voice memos stay easy to follow at 1.25x or 1.5x, and at 1.5x an hour-long recording takes 40 minutes. Many listeners manage 2x with familiar voices and clear speech, though it takes some getting used to.
Music is different. A song nudged to 1.1x or 1.25x keeps its feel and gains some drive, which suits workout playlists, dance practice, or a quick edit. If you publish an edit of someone else’s track, that generally needs permission from the rights holders; personal listening is a different matter.
The honest quality note
Time stretching has limits. Moderate changes, up to about 1.25x, sound natural on almost everything. Push toward 2x and you start to hear the process: drum hits lose some snap, and voices can pick up a slightly phasey, smeared edge. Speech holds up better than music, because what you care about is the words rather than the texture.
Export WAV if you plan to edit the result further, or MP3 at 320 kbps if you just want to listen or share. Either way, the processing happens on your device and nothing is uploaded.
Speed Up Audio or the Pitch Changer?
This page does one job: make audio faster, from a fixed set of speeds. If you want to set speed and pitch independently, hear changes live as you move a slider, or speed something up and change its key in one pass, use the full Pitch Changer / Varispeed tool instead. To go the other way, there is a matching Slow Down Audio tool.
Speed up audio: common questions
Will speeding up the audio change the pitch?
Not with the default setting. Keep original pitch raises the tempo and leaves the pitch alone. Choose tape style if you want the pitch to rise along with the speed.
What speed should I use for podcasts and lectures?
Try 1.25x first, which is comfortable for most speech. 1.5x still works for clear speakers. 2x is possible, but most people need some practice with it.
Is my file uploaded to a server?
No. The processing runs in your browser with FFmpeg compiled to WebAssembly, so your file never leaves your device. We never see it.
Does speeding up reduce the audio quality?
A little, and more the faster you go. Up to about 1.25x it is hard to hear. Near 2x you may notice softer drum hits and a slightly smeared quality on voices.
Can I speed up the audio from a video?
Yes. Drop in the video file and you get its audio back, sped up, as MP3 or WAV. The video picture is not kept.
How is this different from the Nightcore Maker?
Nightcore is a sped-up edit where the pitch rises with the tempo. Tape style here gives you that core sound; the Nightcore Maker is built specifically for making those edits.
What file formats can I use?
MP3, WAV, M4A, FLAC, OGG, and AAC go in. You get MP3 at 320 kbps or lossless WAV out.
Is it free?
Yes. No sign-up, no watermark, and no cap on how many files you speed up.
Who makes this?
We're the small team behind Xport Studio, a private, fully offline app for AI vocals, stems, and mastering. These free tools run on the same idea: your audio stays on your device. If you're curious about the bigger thing, take a look.