Voice notes to MP3, free: drag your WhatsApp .opus files, iPhone voice memos or voicemail files anywhere on this page. Every one is decoded, run through LAME at 192 kbps by default, and saved as an MP3. Nothing uploads; your recordings stay completely private.
Why voice notes won't play anywhere
WhatsApp saves voice messages as .opus, iPhone voice memos are .m4a, and voicemail systems email you .caf or .amr files. Each plays fine in its home app and fails in car stereos, editing software, transcription tools, and court/HR submissions. MP3 plays everywhere. That's the fix.
Privacy isn't optional here
People convert voice notes for serious reasons: saving a loved one's messages, evidence for a dispute, an interview recording. Every other converter makes you upload the audio first. Here, your recordings are never uploaded, stored, or heard by anyone. Skeptical? Here's how to check.
FAQ
How do I get the .opus file out of WhatsApp?
On a phone: open the chat, tap and hold the voice note, then share/export. On WhatsApp Web/Desktop: the download arrow saves the .opus directly. Then drop it here.
Can I convert many at once?
Yes. Drop the whole folder. Flip Auto-download and every MP3 saves itself the moment it's done.
What about .amr voicemails?
Browser decoders mostly don't speak AMR yet; that one's on our workbench. Everything else on this page works today, and Safari can be picky with .opus (Chrome and Firefox handle it).