Compress Audio
Make audio files small enough to send, upload or store, with honest before-and-after sizes.
Drag and drop a file here
or
MP3, M4A, AAC, WAV, FLAC, OGG · up to 50 MB
Files are stored privately and deleted automatically after 60 minutes.
Smaller audio without the guesswork
Recordings of lectures, meetings, podcasts and voice notes are often far larger than they need to be. This tool converts them to an efficient MP3 at 64, 96 or 128 kbps, so they fit email and messaging limits.
For speech, switch on Mono: one channel is plenty for a single voice and halves the size again. You always see the original and new size, and if the result wouldn't be smaller, we keep your original and tell you.
- Accepts MP3, M4A, AAC, WAV, FLAC and OGG
- MP3 output at 64, 96 or 128 kbps
- Mono option for speech, lectures and podcasts
- Shows original and compressed size
- Keeps your original if compression wouldn't help
How to convert Compress Audio
- 1
Choose an MP3, M4A, AAC, WAV, FLAC or OGG file (up to 50 MB).
- 2
Pick a bitrate: 96 kbps is a good balance; 64 kbps is smallest.
- 3
Turn on Mono for voice recordings, then click compress.
- 4
Compare the sizes and download your MP3. Files are deleted within an hour.