Convert M4A to MP3 online. M4A and MP3 both use lossy compression. Free batch processing with no signup or watermark.
Drop or click to add one or more audio files
Add one or more M4A files. You can review the complete batch before processing it.
MP3 is already selected for this page. Add multiple audio files and use the available codec, trim, volume, fade and reverse controls.
Start the batch, then download and check the finished MP3 file or files.
M4A and MP3 both use lossy compression. Re-encoding may introduce a small additional quality loss, especially in audio that has already been compressed several times.
M4A is an audio format that usually holds AAC-encoded sound in an MP4 container. It is Apple’s standard for music downloads and voice memos, offering great quality at small sizes and playing natively across the Apple ecosystem.
M4A plays in Apple Music/iTunes, QuickTime, VLC and most modern media players; on older devices, convert it to MP3.
MP3 is the world’s most popular audio format. Its lossy compression shrinks music and audio to a fraction of the original size while keeping quality good enough for almost any use, which is why it plays on virtually every device and app.
MP3 plays everywhere - any music app, browser, phone, car stereo, and the default player on Windows, macOS, Android and iOS.
ToolSpice can convert your M4A files to these other formats:
These other formats can be converted to MP3 on ToolSpice: