MP3: conversion steps
- Upload your MP3 file to start.
- Convert MP3 to AAC.
- Download the MP3 file.
About MP3 files
a universally supported lossy audio format
MP3 (MPEG-1 Audio Layer III) is a lossy audio format from the early 1990s. It removes the sound listeners are least likely to notice, typically at 128 to 320 kbit/s.
It plays on virtually every device and app, which makes it the default for music files, podcasts and audiobooks.
MP3: what conversion changes
Converting MP3 re-encodes audio.
MP3: settings to change
Before you convert MP3 files, you can adjust: Audio codec, Rate control, Audio bitrate, Quality (VBR), Sample rate, Channels, Normalize loudness, Trim start, Trim duration, and Keep tags.
Limits of the MP3 format
MP3 tops out at 320 kbit/s and two channels, and every re-encode removes a little more detail.
Common questions about MP3
Why does my MP3 sound muffled compared to the CD? The format discards frequencies the encoder deems inaudible, and a low bitrate throws away even more — re-encoding cannot bring them back.
Why convert music to MP3? Every device, car stereo and app made in the last 25 years plays it, so nothing and nobody is left out.