25 KB WAV sample
A WAV file of exactly 25,600 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 25 KB sample, test or dummy WAV file.
Download
sample-wav-25kb.wav
25 KB25,600 bytes
Download 25 KB WAVCreated in your browser in a few seconds, then checked against the SHA-256 checksum. The file is not uploaded anywhere. No sign-up.
- Type
- audio/wav
- SHA-256
760d0154de58614630cba24c063683065a6e71dc4b0db6a606764ac48825c39c- Delivery
- Created in your browser from static generator assets (how it works).
What is in this file
0.1 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 | 0.1 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-25kb.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 63 00 00 57 41 56 45 66 6d 74 20 |RIFF.c..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 63 00 00 00 00 00 00 |....data.c......|
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.
Where 25 KB matters
A 25,600-byte file: the size of a small web image or a short document. These are the default limits a file of this size is useful for testing:
| System | Limit | Note |
|---|---|---|
| TCP initial congestion window | About 14.6 KB (10 segments) | 25 KB needs at least two flights of packets on a new connection. |
| Base64 encoding | Adds 33 percent | A 25 KB file becomes about 34 KB inside JSON or an email. |
Use this file for
- Checking email size handling
- 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.
Technical details
| File name | sample-wav-25kb.wav |
|---|---|
| Format | WAV (Waveform Audio File Format) |
| Extension | .wav |
| MIME type | audio/wav |
| Size | 25,600 bytes (25 KB) |
| Kind | Binary |
| Signature | 52 49 46 46 ?? ?? ?? ?? 57 41 56 45 |
| SHA-256 | 760d0154de58614630cba24c063683065a6e71dc4b0db6a606764ac48825c39c |
| 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-25kb.wav # Linux
shasum -a 256 sample-wav-25kb.wav # macOSOn Windows, run Get-FileHash sample-wav-25kb.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 25 KB?
- Yes. It is 25,600 bytes, which is 25 KB in the binary units that operating systems and server limits use (1 KB = 1,024 bytes).
- What is inside the 25 KB WAV file?
- 0.1 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.