10 MB MP3 sample file

An MP3 file of exactly 10,485,760 bytes. It is a valid MPEG-1 Audio Layer III file, generated for this site and checked with an independent parser.

sample-mp3-10mb.mp3

10 MB10,485,760 bytes

Download 10 MB MP3

Direct download. No sign-up and no waiting.

Type: audio/mpeg
SHA-256: 6ef9e5d5f9691ba13b495b34272bab3dc74dcdbc732ae0dd7d7020af63e1e5dc
Direct URL: https://sampletestfiles.com/downloads/mp3/sample-mp3-10mb.mp3

What is in this file

25,087 MPEG audio frames (10 min 55 s) of a synthesised musical phrase that repeats every eight seconds, after an ID3v2.3 tag. 339 bytes of zero bytes in the tag's standard padding area bring the file to the exact size.

Duration	10 min 55 s
Bit rate	128 kbit/s constant
Sample rate	44,100 Hz
Channels	Stereo
Format	MPEG-1 Audio Layer III
Tags	ID3v2.3 (title, artist, album, genre)

First bytes of the file

The first 64 bytes of sample-mp3-10mb.mp3 as a hex dump: offset, bytes, then the same bytes as text. The MP3 signature is 49 44 33.

00000000  49 44 33 03 00 00 00 00 03 3b 54 49 54 32 00 00  |ID3......;TIT2..|
00000010  00 13 00 00 00 53 61 6d 70 6c 65 20 4d 50 33 20  |.....Sample MP3 |
00000020  28 31 30 20 4d 42 29 54 50 45 31 00 00 00 10 00  |(10 MB)TPE1.....|
00000030  00 00 53 61 6d 70 6c 65 54 65 73 74 46 69 6c 65  |..SampleTestFile|

Preview

Loads the whole 10 MB file in your browser.

Where 10 MB matters

A 10,485,760-byte file: over the default limits of PHP, API Gateway and Spring Boot requests. These are the default limits a file of this size is useful for testing:

System	Limit	Note
Amazon API Gateway	10 MB payload	A 10 MB file in a multipart or base64 body is over the limit.
Spring Boot multipart	10 MB per request by default (max-request-size)	Exceeded once form overhead is added.
PHP	8 MB POST body by default (post_max_size)	Rejected before the script runs.
Amazon S3 multipart upload	5 MiB minimum part size	This file splits into exactly two minimum-sized parts.
Email attachments	Commonly 20 to 25 MB per message	10 MB fits, at about 13.3 MB once encoded.

All 10 MB sample files

Use this file for

Exercising chunked and resumable uploads
Testing audio upload and playback
Checking duration detection and waveform rendering

Testing notes for MP3

A large ID3 tag with artwork can push the first audio frame far into the file, confusing naive sniffers.
Duration is not stored in a header. Players estimate it from bit rate and file size, which goes wrong for variable-bit-rate files that lack a Xing header.

MP3 format reference

Technical details

File name	sample-mp3-10mb.mp3
Format	MP3 (MPEG-1 Audio Layer III)
Extension	.mp3
MIME type	audio/mpeg
Size	10,485,760 bytes (10 MB)
Kind	Binary
Signature	49 44 33
SHA-256	6ef9e5d5f9691ba13b495b34272bab3dc74dcdbc732ae0dd7d7020af63e1e5dc
Created	2026-10-10
Validation	Exact size, signature bytes and structure checked when the file was generated
Preview	Available on this page
Source	Generated for this site; not copied from elsewhere
Licence	Free to use, modify and redistribute (terms)
Category	Audio

Validated for expected format and integrity. As with any download, scan the file with your own security tools before opening it. How files are made and checked

Download from the command line and verify

Fetch the file with curl, then compare its checksum with the SHA-256 value above.

curl -o sample-mp3-10mb.mp3 'https://sampletestfiles.com/downloads/mp3/sample-mp3-10mb.mp3'
sha256sum sample-mp3-10mb.mp3     # Linux
shasum -a 256 sample-mp3-10mb.mp3 # macOS

On Windows, run Get-FileHash sample-mp3-10mb.mp3 -Algorithm SHA256 in PowerShell. A matching value proves that the download is complete and unaltered.

Related files

Questions about this file

Is this file exactly 10 MB?: Yes. It is 10,485,760 bytes, which is 10 MB in the binary units that operating systems and server limits use (1 KB = 1,024 bytes).
What is inside the 10 MB MP3 file?: 25,087 MPEG audio frames (10 min 55 s) of a synthesised musical phrase that repeats every eight seconds, after an ID3v2.3 tag. 339 bytes of zero bytes in the tag's standard padding area bring the file to the exact size.
What is on the MP3 samples?: A short synthesised musical phrase that repeats. It was generated by code for this site, so it is free of any music copyright.

Download