Audio Tools in Your Browser

Free Online Audio Tools: Edit, Convert and Enhance Audio

33 free tools that run in your browser: cut, convert and improve your audio with no sign-up and no installation.

Edit Audio Online Without Software or Sign-Up

Cutting a mistake out of a podcast, converting a WAV to MP3 or pulling the audio out of a video shouldn’t mean installing expensive studio software. Each tool on Free Audio Lab does one job simply: free, without watermarks, on your computer, phone or tablet.

Your files are processed in your browser and are never uploaded to our servers. New here? The guide How to Use an Online Audio Studio shows how to combine the tools step by step.

Edit & Enhance

Cut audio, clean up background noise and reach the right loudness for Spotify, YouTube and podcasts.

Convert & Extract

Convert between WAV, MP3, AAC and M4A, or extract audio from MP4, MOV, WebM and M4V videos.

Creative, DJ & Music

Change pitch and speed, create 8D audio, find BPM and key, and mix harmonically.

Please use the tools with audio you own or have permission to use.

All Audio Tools

Frequently Asked Questions

Are these audio tools really free?
Yes. Every tool on Free Audio Lab is free to use, with no daily limits, no hidden costs and no watermarks on your files. The site is supported by advertising.

Do I need to sign up or install any software?
No. You don’t need an account or a download. Just open the tool you need in your browser and get started.

Are my audio files uploaded to a server?
No. Your files are processed in your browser on your own device and are never uploaded to our servers, so unreleased music and private recordings stay with you.

Do the tools work on phones and tablets?
Yes. The tools run in mobile browsers on phones and tablets. A few, such as the Web Synthesizer, are easiest to use with a computer keyboard, and very long files process faster on a computer. For careful listening, use headphones.

Which file formats can I use?
The converters work with WAV, MP3, AAC and M4A, and you can extract audio as WAV or MP3 from MP4, MOV, WebM and M4V videos. Each tool’s page shows exactly which formats it supports.

How do I extract audio from a video?
Choose the converter that matches your video, for example the MP4 to WAV Converter, or the MOV to WAV Converter for iPhone videos. Open the video and download its audio track as a WAV or an MP3 file.

How do I make a quiet recording louder without distortion?
Use the Sound Optimizer. First smooth out the loudest moments with the compressor, then raise the volume while watching the meters. That way you get a comfortable level without clipping.

How do I remove background noise from a recording?
With the Noise Gate & De-Esser you can silence hum and hiss in the pauses and soften harsh S sounds. To also reduce low rumble and make the voice clearer, use the Sound Optimizer. The best results always start with recording in a quiet room.

How do I check if my song is loud enough for Spotify?
Open your song in the LUFS & Peak Analyzer. Spotify recommends mastering to about -14 LUFS integrated, with true peaks at or below -1 dBTP. If your song is off target, you can adjust it with the Sound Optimizer.

What should I do if my voice only plays on one side?
This often happens when a microphone records on only one channel. Open the file in the Stereo to Mono Converter, choose the channel that carries your voice, and it will play equally loud on both sides.

How do I edit a podcast online for free?
First cut out silences and mistakes with the Audio Trimmer, then add your intro and outro with the Audio Joiner & Mixer. Next, improve the sound in the Sound Optimizer and convert the finished episode with the WAV to MP3 Converter for your podcast host. If you use background music, the Auto-Ducker lowers it automatically whenever you speak.

Which tool is best for beginners?
Start with the Audio Trimmer to cut out mistakes and silences, then open the Sound Optimizer to improve the sound. These two tools are enough for most recordings.

Can I edit copyrighted music?
Please use the tools with audio you own or have permission to use, such as your own recordings, podcasts, voiceovers and royalty-free music. Publishing edits of someone else’s songs usually requires permission from the rights holder.