Compress MP3 to 10 MB.
Need an audio file under 10 MB for email or an upload form? Drop it in and we tune the bitrate to hit the target, uploaded privately and deleted after 1 hour. No watermark, no signup.
On-target
Auto-tunes the bitrate
Clear
Keeps it listenable
Private
Deleted after 1 hour
How it works
- 01
Add your audio
Drop in an MP3, M4A, WAV or other audio file. It's uploaded privately over TLS and deleted after 1 hour.
- 02
We aim for 10 MB
We read the length and pick the bitrate that lands the file near 10 MB, re-encoding it to keep good quality within the budget.
- 03
Download & send
Grab the compressed audio, ready to email or upload anywhere with a 10 MB cap.
Other targets: 5 MB · 10 MB · just make it smaller.
What fits in 10 MB of MP3
10 MB is 10,485,760 bytes, 83,886 kilobits, spent on one steady bitrate from 32 to 320 kbps.
| Bitrate | Longest recording |
|---|---|
| 320 kbps | 4 min 22 s |
| 256 kbps | 5 min 27 s |
| 192 kbps | 7 min 16 s |
| 160 kbps | 8 min 44 s |
| 128 kbps | 10 min 55 s |
| 96 kbps | 14 min 33 s |
| 64 kbps | 21 min 50 s |
| 48 kbps | 29 min 7 s |
| 32 kbps | 43 min 41 s |
| Recording | Bitrate | File size |
|---|---|---|
| 3 min | 320 kbps | 6.87 MB, under |
| 5 min | 279 kbps | 9.98 MB |
| 10 min | 139 kbps | 9.94 MB |
| 20 min | 69 kbps | 9.87 MB |
| 30 min | 46 kbps | 9.87 MB |
| 45 min | 32 kbps | 10.3 MB, over |
- Under 4 min 22 s: 320 kbps, smaller than 10 MB.
- Over 43 min 41 s: cut it into parts of 21 min 50 s for 64 kbps each.
Common questions
Why 10 MB?+
10 MB is a common attachment and upload limit on chat apps, forms and some email setups. It's a comfortable budget for podcasts, lectures and longer voice notes.
Will it still sound okay?+
10 MB is generous for spoken-word audio and short music, so quality usually stays high. We tune the bitrate to the audio's length to make the most of the budget.
Is my audio uploaded anywhere?+
It's uploaded over an encrypted connection, compressed on our server, and both the upload and the result are deleted after 1 hour. No account, no watermark.
What if it can't fit 10 MB?+
We give you the smallest listenable version and tell you it's just over, for a very long track, trim it first.
Which formats work?+
MP3, M4A, AAC, WAV, OGG, FLAC and most common audio files. MP3 comes back as MP3.
More compression tools
Need more than a conversion?
Send your audio or video to TranscriptAI to generate a transcript, summary, structured notes, flashcards, quiz questions or action items: automatically.