Broad input support
MP3, WAV, M4A, AAC, OGG, OPUS, FLAC, WebM — anything your browser can decode works as input.
Turn M4A, OGG, FLAC and other common formats into universal MP3 or lossless WAV — key data processed locally, free and watermark-free.
Privacy-sensitive steps are processed in your browser, and data is destroyed when you close the page.
No 20- or 30-minute ceilings — clean, complete exports with no watermark or audio bumpers added.
Runs right in your desktop or mobile browser — no download needed.
Use it right away — no account required.
Privacy-sensitive steps run in your browser, and data is destroyed when you close the page. Work on meeting recordings, interviews and personal voice notes with confidence.
MP3, WAV, M4A, AAC, OGG, OPUS, FLAC, WebM — anything your browser can decode works as input.
MP3 outputs at a high 192kbps bitrate; WAV is 16-bit PCM lossless.
No queues to wait in — regular files finish in seconds.
Upload an audio file
Pick the output format (MP3 or WAV)
Convert and download
Drop the m4a file into WUJIEE Audio Tools and export as MP3 (192kbps) — a regular recording converts in seconds. Pick 16-bit lossless WAV if you need full fidelity. Converting won't magically improve quality, but it makes the file playable in far more apps and editors.
Yes, completely free. WUJIEE Audio Tools needs no account, adds no watermark, sets no usage quota — and there's no 20- or 30-minute length ceiling either.
WAV output is 16-bit lossless; MP3 outputs at 192kbps, indistinguishable in most listening. Converting between lossy formats can never recover original detail — pick the output by purpose.
Anything your browser can decode: MP3, WAV, M4A/AAC, OGG/OPUS, FLAC, WebM and more. A few niche formats (like amr) depend on your browser — re-save those as m4a first if needed.
Yes — privacy-sensitive steps are processed on-device, and your data is destroyed when you close the page; we never store your audio, which is exactly what you want for meeting recordings.
13 online audio tools: convert, trim, denoise, separate vocals, transcribe speech and more — all in one place.
Browse all tools