Free Online Audio Tools
Convert and process audio right in your browser — no uploads, no sign-up, no watermarks.
These audio tools run entirely in your browser using ffmpeg compiled to WebAssembly. Your audio is processed on your device and never uploaded. The engine downloads once on first use, then works offline.
Why Convert Audio in Your Browser
Your audio stays private
Voice memos, recordings, and music are processed locally — nothing is uploaded to a server you don't control.
No sign-up, no limits
Free audio converters often cap length or require an account. Because the work runs on your device, there's nothing to gate.
Works offline after loading
The WebAssembly engine downloads once, then converts without a connection — no re-upload of your files.