What Free Audio Lab Is
Free Audio Lab is a collection of free online tools for editing, converting, analyzing and fixing audio files, together with guides that explain the audio concepts behind them.
You can trim and join files, convert audio and video files to WAV or MP3, measure loudness in LUFS, estimate the tempo and key of a track, clean up voice recordings, create effects like slowed + reverb or 8D audio, play a browser synthesizer and train your ears to recognize EQ frequencies.
Who Is Behind Free Audio Lab
Free Audio Lab is built and run by Yunus S.
Yunus has been playing music since 2002. In 2005 he passed Trinity College London’s Grade 8 guitar examination, the highest of its graded levels, with Merit, and in 2006 he began studying the trombone at a state conservatory. He plays trombone, guitar and piano.
Since 2016 he has also been producing music and DJing. He produces in FL Studio, Ableton Live and Logic Pro, plays DJ sets with rekordbox and VirtualDJ, and works with hardware from Pioneer DJ, Numark and Akai as well as synthesizers from Moog and Nord.
He releases his own sax house tracks, deep house built around saxophone, trumpet and trombone, under the artist name Housement Park. You can hear them on Spotify, Apple Music, YouTube and other streaming services.
He develops the tools on this site and writes the guides that go with them. The settings recommended in the guides use the same controls you will find in the tools, so you can follow along step by step.
How the Tools Work
Every tool runs directly in your web browser. When you open a file, it is processed on your own device using the browser's built-in audio technology (the Web Audio API). Your audio is not uploaded to our servers.
This keeps your files private and means there is nothing to install and no account to create. Because the work happens on your device, very long files may take more time on older phones and computers.
How the Guides Are Written
The guides explain audio problems in plain language and give settings you can actually use. When a guide relies on a scientific or legal point, it links to a source you can check, such as a university, a standards body, a government office or a reference work.
Recommended settings are starting points, not fixed rules, and every guide shows who wrote it and when it was last updated. If you find a mistake, please let us know through the contact page and it will be corrected.
Using the Tools Responsibly
The tools are meant for audio you own or have permission to use: your own recordings and music, podcasts, and licensed or royalty-free tracks. Editing someone else's music and publishing the result usually requires permission from the rights holder.
How Free Audio Lab Is Funded
All tools and guides are free to use, with no paywall and no sign-up. The site is supported by advertising. You can read how data is handled in our Privacy Policy.
Questions or Feedback?
Ideas for new tools, bug reports and corrections are always welcome.