Turn M4A files into MP3s that play anywhere. Drop in an M4A — an iPhone voice memo, an Apple Music download you own, an audio file from a Mac — and Solmi re-encodes it as a standard MP3 right in your browser. No upload, no signup, and your file never leaves your device.
Drop your M4A onto the converter and press Convert. Solmi decodes the file with your browser's audio codecs, re-encodes the samples as MP3, and hands you the finished file to play or download. A typical song takes a few seconds and nothing is uploaded.
M4A is an MP4 container that usually holds AAC audio — Apple's default for iTunes purchases, voice memos, and Apple Music. MP3 is older and slightly less efficient at the same bitrate, but it plays on essentially every device, car stereo, DAW, and upload form ever made. That universality is the usual reason to convert.
Some, unavoidably. M4A/AAC is already compressed, and MP3 compresses again from the decoded audio, so this is a lossy-to-lossy conversion. Encoding at 192 kbps or higher keeps the loss well below what most people can hear on normal playback gear.
Yes — iPhone voice memos are M4A files, so they convert here directly. Share the memo to your computer (or open this page on the phone itself), drop the file in, and download the MP3.
The most common cause is DRM. Older iTunes Store purchases and Apple Music downloads are protected M4P files that no browser can decode, and they will fail here by design. M4A files you recorded or own outright convert without trouble.
No. The converter runs entirely in your browser: your file is decoded and re-encoded on your own device, and nothing is sent to a server. That is also why it is fast — there is no upload wait and no download wait, just the conversion itself.
Yes, completely free with no signup, no file-size paywall, and no watermark. Once your audio is converted, you can turn the track into a music video with Solmi's AI music video generator — also free to start.