Free Online Audio Converter
Convert between MP3, WAV, AAC, OGG, FLAC and M4A — or pull audio out of any video file — directly in your browser. No upload, no watermark, no signup.
Features
Six Target Formats, One Tool
Pick from MP3, WAV, AAC, OGG, FLAC and M4A — whichever your player, editor or podcast host expects. One upload, any target.
MP3 & AAC for Sharing
LAME VBR (~190 kbps) and AAC 128 kbps — the two formats every device, streaming service and messaging app plays natively.
WAV & FLAC for Archival
Lossless PCM WAV (16-bit / 44.1 kHz) and FLAC for editing, mastering or preserving original quality without re-encoding loss.
OGG & M4A for Flexibility
OGG Vorbis for open-web use, M4A (AAC in MP4) for iOS, Apple Music and iTunes workflows — both first-class here.
Video In, Audio Out
Drop a video file (MP4, MOV, MKV, WebM, AVI) and convert its audio track directly — no separate extraction step needed.
Unified Workflow
Whether your source is an MP3 or a lecture recording in MP4, the converter strips video and re-encodes audio to your target format in one pass.
Container Auto-Detect
FFmpeg reads the source container, probes the audio stream, and re-encodes to your chosen codec — no format guessing required.
Batch-Friendly
Convert one file per page load — but the interface is built for quick iteration: upload, convert, download, repeat.
100% Private & Free
Your audio never leaves your device. All transcoding runs in your browser tab via WebAssembly — no server, no upload, no tracking.
Zero Server Upload
Files are read, converted and written back entirely on your own machine. We never see your audio or the output.
No Watermark
Clean output — no audio intro, no brand tag, no metadata injected. Your audio, untouched.
Works Everywhere
Any modern browser on any device — Chrome, Firefox, Safari, Edge, desktop or mobile.
Loved by creators, students & researchers
Why people use BibiGPT to turn videos into text every day.
Trusted by 50,000+ users worldwide
“I paste a link and get clean captions in seconds — it saves me hours of retyping every single week.”
Maya R.
Content Creator · Repurposes short videos
“Exporting the transcript lets me review new words at my own pace instead of pausing the video constantly.”
Daniel K.
Language Learner · Studies with real videos
“Accurate, timestamped text I can quote directly. It has quietly become part of my daily workflow.”
Priya S.
Researcher · Cites public talks
FAQ'S
Frequently Asked Questions
Ask us anything!
Convert Audio Between Any Format
Free, private, and instant. No signup, no upload, no watermark — drop a file, pick a target format, download in seconds.