10 MB ODS sample

An ODS file of exactly 10,485,760 bytes. It is a valid OpenDocument Spreadsheet file, generated by this site. Compare its checksum and test it with the parser used by your application. Use it wherever you need a 10 MB sample, test or dummy ODS file.

sample-ods-10mb.ods

10 MB10,485,760 bytes

Download 10 MB ODS

Created in your browser in a few seconds, then checked against the SHA-256 checksum. The file is not uploaded anywhere. No sign-up.

Type: application/vnd.oasis.opendocument.spreadsheet
SHA-256: f3354b1574dbac2598a747c4a778f5879b624e236445e5859955beaaea42bca3
Delivery: Created in your browser from static generator assets (how it works).

What is in this file

An OpenDocument spreadsheet with one sheet, a bold header row and 121,520 rows of fictional customers: numbers, text, ISO dates and a formula in every row. Text in the document description (meta.xml) brings the file to the exact size.

Sheets	1 (Customers)
Data rows	121,520
Columns	7
Formulas	121,520
ODF version	1.3
Container	ZIP (OpenDocument package)

First bytes of the file

The first 64 bytes of sample-ods-10mb.ods as a hex dump: offset, bytes, then the same bytes as text. The ODS signature is 50 4B 03 04.

00000000  50 4b 03 04 0a 00 00 00  00 00 00 00 21 5c 85 6c |PK..........!\.l|
00000010  39 8a 2e 00 00 00 2e 00  00 00 08 00 00 00 6d 69 |9.............mi|
00000020  6d 65 74 79 70 65 61 70  70 6c 69 63 61 74 69 6f |metypeapplicatio|
00000030  6e 2f 76 6e 64 2e 6f 61  73 69 73 2e 6f 70 65 6e |n/vnd.oasis.open|

Preview

ODS files cannot be shown in a browser. Download the file and open it in an application that reads ODS, such as LibreOffice Calc and Apache OpenOffice.

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

Finding the first upload limit in a new stack
Testing spreadsheet import alongside XLSX and CSV
Checking date and number conversion

Testing notes for ODS

Dates are real dates in ODS and serial numbers in XLSX, so code written for one format mishandles the other.
Rows and cells can be run-length encoded with a "repeated" attribute. A sheet that looks empty may declare a million repeated rows, and a reader that expands them literally runs out of memory.

ODS format reference

Technical details

File name	sample-ods-10mb.ods
Format	ODS (OpenDocument Spreadsheet)
Extension	.ods
MIME type	application/vnd.oasis.opendocument.spreadsheet
Size	10,485,760 bytes (10 MB)
Kind	Binary
Signature	50 4B 03 04
SHA-256	f3354b1574dbac2598a747c4a778f5879b624e236445e5859955beaaea42bca3
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	Not available for this file; details only
Source	Generated in your browser by this site's generator; not copied from elsewhere
Licence	Free to use, modify and redistribute (terms)
Category	Spreadsheets

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-ods-10mb.ods     # Linux
shasum -a 256 sample-ods-10mb.ods # macOS

On Windows, run Get-FileHash sample-ods-10mb.ods -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 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 ODS file?: An OpenDocument spreadsheet with one sheet, a bold header row and 121,520 rows of fictional customers: numbers, text, ISO dates and a formula in every row. Text in the document description (meta.xml) brings the file to the exact size.
What do the ODS samples contain?: One sheet of fictional orders with a bold header row. Each row has text, a date, numbers and a formula that multiplies quantity by unit price.

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