M4A to MP3 converter
Convert M4A files, such as iPhone voice memos and iTunes songs, to MP3 that plays everywhere. No upload, in your browser.
Drop an audio file
or drop it here, or paste. Up to 500 MB per file.
Runs in your browser. Your files are not uploaded.
Formats: the format list shows only what this browser can encode. MP3 and FLAC use an encoder that downloads the first time you choose them. M4A (AAC) is not available in every Firefox version.
Memory: audio is decoded in full, about 23 MB per minute of 48 kHz stereo, so long recordings can be slow on phones. Files that would need more than about 1 GB once decoded (about 45 minutes of 48 kHz stereo, or 90 of mono) are refused before decoding.
How to use M4A to MP3 converter
Drop an M4A file on the page, such as a voice memo.
Keep MP3 as the format and choose a bitrate.
Select Apply and wait for the conversion.
Download the MP3.
Questions
No. Everything runs in your browser and the file never leaves your device.
Some players, car stereos and websites accept MP3 only. MP3 opens almost everywhere.
M4A and MP3 are both lossy, so converting encodes the sound a second time. A bitrate of 192 kbps or more keeps the loss small.
No. Files with copy protection cannot be read by the browser.
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