Audio Tools
M4A to MP3 Converter
Convert M4A audio files to MP3 quickly and easily. 100% client-side — your file never leaves your device.
Runs entirely in your browser — your audio never leaves this device
Private & client-side
Your audio files are processed locally in your browser whenever supported. Files are not uploaded to our servers.
Drop your audio file here
or click to choose from your device
Choose Audio FileM4A to MP3: making Apple recordings universal
M4A is the default format for iPhone Voice Memos, many Apple apps and iTunes purchases without copy protection. It usually contains AAC audio, which sounds good at small sizes — but some older car stereos, media players, editing tools and upload forms only accept MP3.
This converter decodes the M4A in your browser and re-encodes it as a genuine MP3 at the bitrate you choose, with 192 kbps recommended.
Common uses
Voice memos
Share iPhone recordings with people using Windows or Android.
Car stereos and MP3 players
Play audio on devices without AAC support.
Transcription and editing
Upload recordings to services that require MP3.
Course and lecture recordings
Distribute recordings in the most compatible format.
If a file will not convert
M4A is a container that can hold different codecs. Most browsers decode AAC, but a few files use codecs your browser cannot read, such as Apple Lossless in some browsers. Trying another browser, such as Safari or Chrome, often helps.
Protected files
Songs bought with copy protection (DRM) cannot be decoded and are not supported.
Questions
Frequently asked questions
Is the M4A to MP3 converter free?
Yes. It is completely free, with no sign-up and no limits.
Are my audio files uploaded to a server?
No. Your M4A is decoded and encoded into MP3 entirely in your browser. The file never leaves your device.
Why might my M4A not convert?
M4A files use different codecs (often AAC). Most modern browsers can decode AAC, but if your browser cannot decode the specific codec, the tool will tell you clearly instead of producing a broken file.
Is this a real MP3 file?
Yes. The M4A is decoded into raw audio and re-encoded with a genuine MP3 encoder, producing a valid, playable MP3.