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.
iPhone M4A voice memos converted to MP3 that plays anywhere — email, WhatsApp, court submissions, transcription services.
Shrink lossless rips to 320 kbps MP3 for your phone — at quality you choose, not what a free tier allows.
Meetings, interviews, dictation — converted locally. No server ever sees the content.
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.
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.
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.