Free audio tools,
right in your browser.
Convert, trim, merge, compress and fix audio files, or pull the sound out of a video, without uploading anything. Free, private, no sign-up.
Audio Converter
MP3, WAV, OGG, FLAC or M4A from any audio or video file, at the bitrate you pick.
Open the converter →Audio Trimmer
Cut a range out of a track, with optional fades. Keeping the format is instant and lossless.
Open the trimmer →Audio Merger
Join up to 5 files into one, in the order you pick them.
Open the merger →Audio Compressor
Shrink files with a lower bitrate and see the savings live.
Open the compressor →Volume & Normalize
Make a track louder or quieter, or normalize it to streaming loudness.
Open volume →Speed Changer
Play faster or slower, with the pitch kept or shifted along.
Open speed →Silence Trimmer
Remove the quiet parts at the start and end, or every pause in a recording.
Open the silence trimmer →Popular conversions
How it works
Every tool on this site runs entirely inside your browser, powered by ffmpeg compiled to WebAssembly. Your recordings, music and videos are never uploaded anywhere. All the processing happens on your own device, which is why the tools can stay completely free.
Drop in up to five files at a time, audio or video, tweak the settings, listen to the result right on the page, and download it one by one or bundled as a ZIP. The audio engine (about 31 MB) downloads the first time you run a job and is cached afterwards.
Frequently asked questions
Are these audio tools really free?
Yes. Every tool on AudioKit is completely free with no sign-up, no watermarks and no hidden limits beyond the 5-file batch size. The site is supported by ads.
Are my files uploaded to a server?
No. All processing happens inside your browser using ffmpeg compiled to WebAssembly. Your recordings and music never leave your computer or phone.
Can I convert a video to MP3?
Yes. Every tool accepts video files (MP4, MOV, MKV, WebM, AVI) and works on their soundtrack. The converter turns a video into MP3, WAV or any other audio format in one step.
Which formats are supported?
Input: MP3, WAV, OGG, OPUS, FLAC, M4A, AAC, WMA, AIFF and every common video container. Output: MP3, WAV, OGG Vorbis, FLAC and M4A (AAC).
Why does the first job take a moment to start?
The audio engine, about 31 MB, downloads the first time you run a job. Your browser caches it, so later jobs start immediately, even offline once the app is installed.