1 MB XLSX sample file
An XLSX file of exactly 1,048,576 bytes. It is a valid Excel workbook (Office Open XML) file, generated for this site and checked with an independent parser.
Download
sample-xlsx-1mb.xlsx
1 MB1,048,576 bytes
Download 1 MB XLSXDirect download. No sign-up and no waiting.
- Type
- application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
- SHA-256
6ad7e16e48b55f53a05492781e158b4972acfb5aaddd69f019822cc839784e52- Direct URL
https://sampletestfiles.com/downloads/xlsx/sample-xlsx-1mb.xlsx
What is in this file
One worksheet with a bold, frozen header row and 15,333 rows of fictional orders: text, dates, numbers and a formula in every row. 2,214 bytes of text in the workbook description property bring the file to the exact size.
| Sheets | 1 (Orders) |
|---|---|
| Data rows | 15,333 |
| Columns | 9 |
| Formulas | 15,333 (total = quantity × unit price) |
| Frozen panes | Header row |
| Macros | None |
| Container | ZIP (Office Open XML) |
First bytes of the file
The first 64 bytes of sample-xlsx-1mb.xlsx as a hex dump: offset, bytes, then the same bytes as text. The XLSX signature is 50 4B 03 04.
00000000 50 4b 03 04 14 00 00 00 08 00 00 00 21 5c 19 27 |PK..........!\.'|
00000010 be 30 2f 01 00 00 96 03 00 00 13 00 00 00 5b 43 |.0/...........[C|
00000020 6f 6e 74 65 6e 74 5f 54 79 70 65 73 5d 2e 78 6d |ontent_Types].xm|
00000030 6c ad 93 cf 4e 02 31 10 c6 ef 3e 45 d3 2b d9 16 |l...N.1...>E.+..|Preview
XLSX files cannot be shown in a browser. Download the file and open it with Microsoft Excel.
Where 1 MB matters
A 1,048,576-byte file: exactly the default upload limit of nginx, Spring Boot and Next.js. These are the default limits a file of this size is useful for testing:
| System | Limit | Note |
|---|---|---|
| nginx | 1 MB by default (client_max_body_size) | A multipart upload of this file exceeds the limit by the size of the form boundaries. |
| Spring Boot multipart | 1 MB per file by default (max-file-size) | A file of exactly 1 MB is at the limit. |
| Next.js API routes and Server Actions | 1 MB by default | Larger bodies need the size limit raised in configuration. |
| Cloud Firestore documents | 1 MiB (1,048,576 bytes) | The same number of bytes as this file. |
| Apache Kafka messages | About 1 MB by default | Brokers reject larger records unless message.max.bytes is raised. |
Use this file for
- Download tests on mobile connections
- Load-testing importers with many rows
- Testing spreadsheet import features
Testing notes for XLSX
- Importers that read only cached values and importers that recalculate formulas can disagree. The samples include a formula in every row.
- A date cell is a number with a format; importers that ignore the format show values such as 45123 instead of a date.
Technical details
| File name | sample-xlsx-1mb.xlsx |
|---|---|
| Format | XLSX (Excel workbook (Office Open XML)) |
| Extension | .xlsx |
| MIME type | application/vnd.openxmlformats-officedocument.spreadsheetml.sheet |
| Size | 1,048,576 bytes (1 MB) |
| Kind | Binary |
| Signature | 50 4B 03 04 |
| SHA-256 | 6ad7e16e48b55f53a05492781e158b4972acfb5aaddd69f019822cc839784e52 |
| Created | 2026-10-10 |
| Validation | Exact size, signature bytes and structure checked when the file was generated |
| Preview | Not available for this format; details only |
| Source | Generated for this site; not copied from elsewhere |
| Licence | Free to use, modify and redistribute (terms) |
| Category | Spreadsheets |
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-xlsx-1mb.xlsx 'https://sampletestfiles.com/downloads/xlsx/sample-xlsx-1mb.xlsx'
sha256sum sample-xlsx-1mb.xlsx # Linux
shasum -a 256 sample-xlsx-1mb.xlsx # macOSOn Windows, run Get-FileHash sample-xlsx-1mb.xlsx -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 1 MB?
- Yes. It is 1,048,576 bytes, which is 1 MB in the binary units that operating systems and server limits use (1 KB = 1,024 bytes).
- What is inside the 1 MB XLSX file?
- One worksheet with a bold, frozen header row and 15,333 rows of fictional orders: text, dates, numbers and a formula in every row. 2,214 bytes of text in the workbook description property bring the file to the exact size.
- Do the workbooks contain macros?
- No. They are plain .xlsx files with one worksheet, a frozen header row and simple multiplication formulas.