Audio Converter
Convert MP3, M4A, WAV, FLAC, OGG, AAC, and OPUS audio files.
How it works
Upload
Select your source file.
Convert
Choose output settings and process the file.
Download
Download the converted file instantly.
About This Tool
The JustConvert Audio Converter changes audio files between MP3, M4A, AAC, WAV, FLAC, OGG, and OPUS using FFmpeg, the same engine behind most professional media software. Pick the target format, set bitrate and sample rate, and download a file that plays cleanly on phones, browsers, editors, and car systems.
It suits everyday compatibility fixes: shrinking a WAV recording to MP3 for email, turning a FLAC archive into M4A for an iPhone, or exporting OPUS to MP3 for an old player. Files are processed over HTTPS and removed after the download window, so nothing is kept.
- check_circleConvert between MP3, M4A, AAC, WAV, FLAC, OGG, and OPUS
- check_circleChoose bitrate from 96 kbps up to 320 kbps
- check_circleKeep the original sample rate or resample to 44.1 / 48 kHz
- check_circleLossless options (WAV, FLAC) for archiving and editing
- check_circleFiles processed securely and auto-deleted after conversion
Frequently Asked Questions
Which audio format gives the smallest file? expand_more
OPUS and AAC (M4A) give the smallest files at good quality. MP3 at 128 kbps is the most compatible small option.
Will converting between lossy formats reduce quality? expand_more
Re-encoding lossy audio (for example MP3 to OGG) can lose a little detail. Convert from the highest-quality source you have for the best result.
Can I convert audio on my phone? expand_more
Yes. The converter runs in mobile browsers on Android and iPhone with no app to install.