# Change the speed or pitch of audio

> Make audio faster or slower with the pitch kept, or let it change like a tape. Nothing leaves your device.

Speed up or slow down audio without changing its pitch, or shift the pitch by semitones. It runs in your browser and nothing is ever uploaded.

- Tool: [Change audio speed](https://fixmint.cc/change-audio-speed)
- Category: [Audio & video](https://fixmint.cc/audio-video)
- Fixes: Audio plays too fast or too slow
- Runs in the browser: files and text stay on the device, no sign-up, free.

## How to change the speed or pitch of audio

1. Drop an audio file, or a video with sound, onto the box.
2. Move the speed slider or tap a preset. Leave Keep the pitch ticked unless you want a tape effect.
3. Play the result, then download it as a WAV file.

## Questions

### Does changing the speed change the pitch?

With Keep the pitch on, no: the tempo changes and the pitch stays where it was. Turn it off and the sound behaves like a tape, so faster is higher and slower is lower.

### Is my audio uploaded?

No. The file is decoded, processed and saved again in your browser, so it never leaves your device.

### What is the longest file this handles?

About 10 minutes. Longer sound is refused with a message, so cut it shorter first.

### What format is the download?

A 16-bit WAV file. It plays in every browser and opens in most audio editors.

## Related tools

- [Clean voice recording](https://fixmint.cc/clean-voice-recording): Hiss and hum in my voice memo
- [Remove silence](https://fixmint.cc/remove-silence): Long pauses in my recording
- [Normalize loudness](https://fixmint.cc/normalize-audio-loudness): Files at uneven volume
- [Make loop](https://fixmint.cc/make-audio-loop): Need a seamless loop of a sound