Audio → Audio
M4AtoOpus
Drop your files here
Video, audio, images and documents: MP4, MP3, HEIC, DOCX, PDF and 33 more formats. Several files or a link at once.
Choose files
Why convert
M4A — Apple's audio format, used by iPhone voice memos and iTunes. Opus — the voice-message format of Telegram and WhatsApp; good even at low bitrates.
What changes in the file
The sound is encoded once more, so keep the bitrate at least as high as the original.
Which settings to pick
Use 128–192 kbit/s for music; 64 is enough for speech.