Best free online audio converter — no upload required

Most online audio converters upload your file to a server, process it remotely, and delete it later. TurboConvert is different: it converts audio files entirely in your browser using WebAssembly. Your files never leave your device. Here's an overview of the audio tools available.

What audio conversions does TurboConvert support?

TurboConvert currently covers the four most common audio conversion needs:

• MP4 to MP3 — extract the audio track from any video file.
• WAV to MP3 — compress a large WAV recording for sharing or streaming.
• MP3 to WAV — convert MP3 to uncompressed WAV for audio editing.
• MP3 to MP4 — wrap audio in an MP4 container for YouTube or social media.

Why choose a browser-based audio converter?

Server-based audio converters require you to upload potentially sensitive audio — private voice messages, unreleased music, confidential recordings. Browser-based conversion means your audio data never travels over the internet to a third-party server.

TurboConvert uses FFmpeg compiled to WebAssembly — the same professional-grade audio processing library used by most desktop audio software, running entirely inside your browser tab.

No daily limits, no account

Unlike many free audio converter tools that limit free users to a few conversions per day or require email sign-up, TurboConvert is completely unlimited and requires no account. Use it as many times as you need.