100 MB MP3 test file
A MP3 audio file of exactly 104,857,600 bytes, created instantly in your browser. Nothing is uploaded, and there is no sign-up.
Testing a limit? Grab the edge cases too
Need another size or name? Open it in the generator.
What’s inside the file
An MPEG audio frame header followed by padding. It is recognised as audio/mpeg but is silent/unplayable — meant for upload and MIME tests.
- Size: 104,857,600 bytes = 100 MB (binary) ≈ 104.86 MB (decimal)
- MIME type:
audio/mpeg - File name:
dummy-100mb.mp3
Will a 100 MB file upload?
How a 100 MB file compares with published limits (verified 2026-09-27):
| Service | Limit | 100 MB file |
|---|---|---|
| Gmail — email attachments (total per message) | 25 MB | Too big |
| Outlook.com — email attachments | 25 MB | Too big |
| Yahoo Mail — email attachments (total per message) | 25 MB | Too big |
| WhatsApp — documents / files | 2 GB | Fits |
| Discord (free) — file attachments | 20 MB | Too big |
| Slack — file upload | 1 GB | Fits |
| Facebook Messenger — files in chats | 100 MB | Fits |
| Notion (Free) — file upload | 5 MB | Too big |
| Trello (Free) — card attachment from computer | 10 MB | Too big |
| X (Twitter) — image | 5 MB | Too big |
| LinkedIn — document post (pdf, docx, pptx) | 100 MB | Fits |
| Shopify — product image | 20 MB | Too big |
| Typeform — file upload question | 10 MB | Too big |
Sources and 40+ more limits (servers, frameworks, cloud storage): file upload limits reference.
Good for testing
- Audio and podcast upload forms
- Voice-message attachment limits
- audio/mpeg MIME validation
Questions
Is this 100 MB MP3 exactly 104,857,600 bytes?
Yes. The file is exactly 104,857,600 bytes (100 MB with 1 MB = 1,024 × 1,024 bytes). If the system you test counts 1 MB as 1,000,000 bytes, use the 100,000,000-byte button instead.
Will the MP3 file play?
No — An MPEG audio frame header followed by padding. It is recognised as audio/mpeg but is silent/unplayable — meant for upload and MIME tests. Use it to test uploads, size limits and MIME checks, not playback.
Is it safe? Where does the file come from?
The file is created by JavaScript in your own browser when you click the button. Nothing is uploaded or downloaded from a server, and the file contains no macros, scripts or personal data.
More about the format: MP3 format guide.