MP3 → M4A
Convert MP3 to M4A
Free, instant and 100% private. Your MP3 file is converted on your own device and never uploaded anywhere.
Drop your MP3 file here
or click to choose — converted to M4A instantly, on your device
Nothing is uploaded. Your files never leave this browser.
Converting MP3 to M4A is a common task when you need better quality than mp3 per byte. MP3 is the most widely supported compressed audio format on earth. It shrinks audio dramatically with quality good enough for nearly all listening, and plays on essentially every device and app. M4A, on the other hand, gives you better quality than mp3 per byte and efficient compression. ZeroUpload performs this conversion entirely inside your browser, so your MP3 file is never uploaded to a server.
How to convert MP3 to M4A
- 1
Drop your MP3 file into the box (or click to select it).
- 2
ZeroUpload converts it to M4A instantly, right inside your browser.
- 3
Download your new M4A file. Nothing was ever uploaded.
When should you convert MP3 to M4A?
You should convert MP3 to M4A when you want Apple ecosystem audio but your source is MP3. Typical situations include music for any phone, car or player, podcasts and voice recordings, where the destination expects M4A instead.
MP3 vs M4A
MPEG-1 Audio Layer III (MP3)
MP3 is the most widely supported compressed audio format on earth. It shrinks audio dramatically with quality good enough for nearly all listening, and plays on essentially every device and app.
Strengths
- + Plays everywhere
- + Small files
- + Great general-purpose format
Trade-offs
- – Lossy compression
- – No multichannel surround
MPEG-4 Audio (AAC) (M4A)
M4A is an MPEG-4 audio container, usually holding AAC. It offers better quality than MP3 at the same bitrate and is the default for iTunes, Apple Music and voice memos, but plays less universally than MP3.
Strengths
- + Better quality than MP3 per byte
- + Efficient compression
- + Standard on Apple devices
Trade-offs
- – Less universal than MP3
- – Occasionally rejected by older players
Frequently asked questions
How do I convert MP3 to M4A? +
Drop your MP3 file into the box above (or click to choose it), and ZeroUpload converts it to M4A right inside your browser. Then download the result. No account, no waiting.
Is it safe to convert MP3 files here? +
Completely. ZeroUpload does the entire conversion on your own device. Your MP3 file is never uploaded to any server, so your data stays 100% private.
Does converting MP3 to M4A cost anything? +
No. It is free with no limits and no signup. Because the conversion runs on your device, there are no server costs and therefore no paywalls.
What is the difference between MP3 and M4A? +
MP3 is the universal compressed audio format that plays on virtually any device. M4A is Apple's efficient AAC audio format used by iTunes and Apple Music. Converting from MP3 to M4A trades plays everywhere for better quality than mp3 per byte.
Will it work offline? +
Yes. Once the page (and engine) has loaded, the MP3 to M4A conversion works even with your internet disconnected, because everything happens locally.