TuneLab
MP4 → MP3
Convert your MP4 files to MP3 format. Private — converted on your device.
Processed on your device — files never leave your machine
Drop your MP4 file here or click to browse
Converted on your device — files never uploaded
Converting...
Ready
How to Convert MP4 to MP3
- 1 Upload your MP4 file
- 2 Converted on your device — files never uploaded
- 3 Download your MP3 file
Frequently Asked Questions
Is MP4 or MP3 better quality?
Both MP4 and MP3 are lossy formats. MP3 (MP3) has the widest device compatibility. Quality depends on the bitrate — 320 kbps is near-transparent for most listeners.
Will I lose quality converting MP4 to MP3?
Each lossy re-encoding loses a small amount of quality. For one conversion at 320 kbps, the loss is negligible. Avoid converting back and forth between lossy formats repeatedly.
How long does conversion take?
Seconds for most files. Conversion runs entirely on your device — no upload wait, no server queue. Longer files (over 30 minutes) may take slightly longer.