# Audio Volume & Speed - Boost Volume, Speed Up or Slow Down Online

> Free online audio volume booster: amplify or reduce volume and change playback speed (0.5x to 3x without pitch change). Processed locally, no upload.

- URL: https://qilingtools.com/en/audio/volume
- Category: Audio Tools (https://qilingtools.com/en/audio)
- Tags: [Audio](https://qilingtools.com/en/tags/audio), [Music](https://qilingtools.com/en/tags/music)
- Last updated: 2026-10-29
- Price: Free, no sign-up
- Privacy: Runs locally in the browser; files are never uploaded

Recording too quiet? Boost the volume by 2x or more. Lecture too slow? Play it at 1.5x without changing the pitch. Both adjustments can be applied together.

## How to use

1. Upload an audio file
2. Set the volume factor and playback speed
3. Click start and download the result

## Features

- Volume 0.1x to 5x
- 0.5x to 3x speed with pitch preserved
- MP3 / WAV / M4A output
- FFmpeg runs locally

## FAQ

### Will boosting cause distortion?

If the original is already near full scale, boosting may clip. Try 1.5x first and increase gradually.

### Are my files uploaded to a server?

No. Everything runs locally in your browser via WebAssembly. Files never leave your computer and are discarded when you close the page.

### Do I need to sign up or pay?

No. The site is completely free, requires no account, has no usage limits and adds no watermarks.

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- [Normalize Audio](https://qilingtools.com/en/audio/normalize): Free online loudness normalizer: bring a batch of files to the same perceived loudness with EBU R128 / LUFS, or even out uneven speech with compression.
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- [Change Audio Pitch](https://qilingtools.com/en/audio/pitch): Free online pitch shifter: move a song or recording up to 12 semitones up or down while keeping the tempo — for transposing backing tracks and voice changing.