Free · Batch + ZIP · Nothing uploaded

Audio converter

Convert M4A, WAV, OGG, FLAC and more to MP3 or WAV — pick your bitrate, convert in batch, download a ZIP. All in your browser.

Drop audio files here, or browse

M4A, WAV, OGG, FLAC, MP3… · batch supported

🔒 Decoding and encoding run on your device — your audio is never uploaded.

The converter without an upload step

🎙️

Voice memos → MP3

iPhone M4A voice memos converted to MP3 that plays anywhere — email, WhatsApp, court submissions, transcription services.

💿

FLAC & WAV → portable

Shrink lossless rips to 320 kbps MP3 for your phone — at quality you choose, not what a free tier allows.

🔒

Private recordings

Meetings, interviews, dictation — converted locally. No server ever sees the content.

Audio converter FAQ

Why MP3 and WAV only as output?

They cover virtually every "convert to" search: MP3 plays on everything, WAV is the lossless editing standard. The encoders run in your browser — formats like M4A or OGG would require server-side processing, which would break the no-upload promise.

Does converting MP3 → MP3 lose quality?

Re-encoding lossy audio always costs a little quality. It's fine for changing bitrate downward (320 → 128 to save space), but don't convert 128 → 320 expecting improvement.

My file won't decode — why?

A few formats are codec-dependent: FLAC works in Chrome/Edge/Firefox, AIFF mainly in Safari, and DRM-protected files (Apple Music, Audible) can't be converted by any browser tool.