Make an M4A play where only MP3 does
Old car stereos, ancient players, strict systems: the one format they all know, made from your M4A locally.
Runs in your browser. Your file never leaves your computer.
- UnlocksAnything too old for AAC
- CostSlight, from lossy re-encoding
- Our default320 kbps to minimise it
- TimeSeconds per file
The M4A that plays beautifully on your phone can meet silence from a 2006 car stereo, a cheap MP3 player, a conference system with a fixed allowlist. MP3 is the fallback that has never failed. Converting from M4A means re-encoding one lossy format into another, which costs a sliver of quality; at 320 kbps output the loss stays inaudible in practice. The page does that encode in your browser, with the caveat stated rather than hidden.
Questions
How audible is the double-lossy hit?
At 320 kbps output from a decent M4A, essentially inaudible. It becomes noticeable if you chain more conversions, so keep the M4A as your source.
Why not just use the M4A everywhere?
Do, where it plays. This page is for the specific hardware that predates AAC or restricts formats.
Which bitrate limits the damage most?
The highest, 320 kbps. Dropping output bitrate compounds the loss from the original AAC encode.
Is the file sent anywhere?
No. Conversion happens entirely in your browser.
Related conversions
- MP3 to M4AWhen a workflow or app insists on M4A. Honest note: this cannot make the MP3 sound better, only fit better.
- M4A to WAVPlain PCM out of an AAC file, for the tool in your chain that wants WAV and nothing else.
- M4A to FLACOnly for one honest reason: a workflow that wants lossless input files. No quality returns; the page is upfront about that.
- M4A to OGGFor open-format targets: game engines, web projects and Linux setups that prefer OGG containers.
- WAV to MP3Turn a large studio recording into a small file that plays anywhere, at a bitrate where almost nobody can hear the difference.
- AIFF to MP3The universally playable delivery format, encoded from your uncompressed audio on your own machine.
- FLAC to MP3From archive copy to everyday copy: 320 kbps MP3 encoded from lossless source, the best MP3 can be.
Part of convert audio files in your browser. Every other conversion is on the conversions index.