30 MB WAV sample

A WAV file of exactly 31,457,280 bytes. It is a valid Waveform Audio File Format file, generated by this site. Compare its checksum and test it with the parser used by your application. Use it wherever you need a 30 MB sample, test or dummy WAV file.

sample-wav-30mb.wav

30 MB31,457,280 bytes

Download 30 MB WAV

Created in your browser in a few seconds, then checked against the SHA-256 checksum. No sign-up.

Type: audio/wav
SHA-256: e79c37453fad7d0ecbb685dfaeb87b33c07ea55bb31b6a8504df2ad2227dba67
Delivery: Created in your browser from static generator assets (how it works).

What is in this file

2 min 58 s of a synthesised eight-second musical phrase that repeats, as uncompressed 16-bit stereo PCM behind a 44-byte RIFF header. No padding is needed: the sample count sets the size.

Duration	2 min 58 s
Sample rate	44,100 Hz
Channels	2 (stereo)
Bit depth	16-bit PCM
Bit rate	1,411 kbit/s

First bytes of the file

The first 64 bytes of sample-wav-30mb.wav as a hex dump: offset, bytes, then the same bytes as text. The WAV signature is 52 49 46 46 ?? ?? ?? ?? 57 41 56 45.

00000000  52 49 46 46 f8 ff df 01  57 41 56 45 66 6d 74 20 |RIFF....WAVEfmt |
00000010  10 00 00 00 01 00 02 00  44 ac 00 00 10 b1 02 00 |........D.......|
00000020  04 00 10 00 64 61 74 61  d4 ff df 01 00 00 00 00 |....data........|
00000030  02 00 02 00 0a 00 09 00  15 00 13 00 2a 00 27 00 |............*.'.|

Preview

Creates the file in your browser and shows it here. Nothing large is downloaded from our server.

Where 30 MB matters

A 31,457,280-byte file, 30 MB in the binary units that operating systems and upload limits use. It is useful wherever a form, an API gateway, a storage quota or a mail server is configured with a limit of about this size.

All 30 MB sample files

Use this file for

Measuring download speed from your own server or CDN
Testing speech-to-text input handling
Testing large audio uploads

Testing notes for WAV

Not every WAV file has a 44-byte header; extra chunks may appear before the audio data, so parsers must walk the chunk list.
Three MIME types are in common use: audio/wav, audio/x-wav and audio/vnd.wave. Allow-lists should accept all of them.

WAV format reference

Technical details

File name	sample-wav-30mb.wav
Format	WAV (Waveform Audio File Format)
Extension	.wav
MIME type	audio/wav
Size	31,457,280 bytes (30 MB)
Kind	Binary
Signature	52 49 46 46 ?? ?? ?? ?? 57 41 56 45
SHA-256	e79c37453fad7d0ecbb685dfaeb87b33c07ea55bb31b6a8504df2ad2227dba67
Created	2026-10-23
Validation	See the listed size and SHA-256. Small downloads are checked in the browser; verify streamed downloads manually. A hash match does not prove parser compatibility.
Preview	Available on this page
Source	Generated in your browser by this site's generator; not copied from elsewhere
Licence	Free to use, modify and redistribute (terms)
Category	Audio

Check the stated structure and checksum against your application requirements. As with any download, scan the file with your own security tools before opening it. How files are made and checked

Verify your copy

This file is created in your browser, so it has no direct URL for curl or wget. The generator is designed to produce reproducible bytes. After saving, compare the checksum with the SHA-256 value above.

sha256sum sample-wav-30mb.wav     # Linux
shasum -a 256 sample-wav-30mb.wav # macOS

On Windows, run Get-FileHash sample-wav-30mb.wav -Algorithm SHA256 in PowerShell. For scripts and pipelines, save the file once and keep your own copy.

Related files

Questions about this file

Is this file exactly 30 MB?: Yes. It is 31,457,280 bytes, which is 30 MB in the binary units that operating systems and server limits use (1 KB = 1,024 bytes).
What is inside the 30 MB WAV file?: 2 min 58 s of a synthesised eight-second musical phrase that repeats, as uncompressed 16-bit stereo PCM behind a 44-byte RIFF header. No padding is needed: the sample count sets the size.
What format are the WAV samples?: 16-bit stereo PCM at 44,100 Hz with the canonical 44-byte header.

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