10 MB XLSX sample file

An XLSX file of exactly 10,485,760 bytes. It is a valid Excel workbook (Office Open XML) file, generated for this site and checked with an independent parser.

sample-xlsx-10mb.xlsx

10 MB10,485,760 bytes

Download 10 MB XLSX

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Type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
SHA-256: b2d735e03440b69d7ac851dc0a9ff61e4a0e61ef147178a6b84afeefa8de93b5
Direct URL: https://sampletestfiles.com/downloads/xlsx/sample-xlsx-10mb.xlsx

What is in this file

One worksheet with a bold, frozen header row and 153,324 rows of fictional orders: text, dates, numbers and a formula in every row. 12,428 bytes of text in the workbook description property bring the file to the exact size.

Sheets	1 (Orders)
Data rows	153,324
Columns	9
Formulas	153,324 (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-10mb.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 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
Checking date and number conversion
Verifying formula handling

Testing notes for XLSX

Reading a large workbook with a DOM-style library can use many times the file size in memory. Test with the 5 MB and 10 MB samples and prefer streaming readers.
Importers that read only cached values and importers that recalculate formulas can disagree. The samples include a formula in every row.

XLSX format reference

Technical details

File name	sample-xlsx-10mb.xlsx
Format	XLSX (Excel workbook (Office Open XML))
Extension	.xlsx
MIME type	application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
Size	10,485,760 bytes (10 MB)
Kind	Binary
Signature	50 4B 03 04
SHA-256	b2d735e03440b69d7ac851dc0a9ff61e4a0e61ef147178a6b84afeefa8de93b5
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-10mb.xlsx 'https://sampletestfiles.com/downloads/xlsx/sample-xlsx-10mb.xlsx'
sha256sum sample-xlsx-10mb.xlsx     # Linux
shasum -a 256 sample-xlsx-10mb.xlsx # macOS

On Windows, run Get-FileHash sample-xlsx-10mb.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 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 XLSX file?: One worksheet with a bold, frozen header row and 153,324 rows of fictional orders: text, dates, numbers and a formula in every row. 12,428 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.

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