50 MB CSV sample

A CSV file of exactly 52,428,800 bytes. It is a valid Comma-separated values file, generated by this site. Compare its checksum and test it with the parser used by your application. Use it wherever you need a 50 MB sample, test or dummy CSV file.

sample-csv-50mb.csv

50 MB52,428,800 bytes

Download 50 MB CSV

Created in your browser and, in browsers that can stream to disk, sent straight to your downloads list; this can take a minute. No sign-up.

Type: text/csv
SHA-256: 72ad864af7d5c6aea19126668c2ac83880450bcf78ee7f3a46fa0ca7a81afc1c
Delivery: Created in your browser from static generator assets (how it works).

What is in this file

A header row and 383,801 rows of fictional customer records in 12 comma-separated columns. The notes field of the last row is lengthened so the file lands on the exact byte count.

Data rows	383,801
Columns	12
Header row	Yes
Encoding	UTF-8 (ASCII characters only)

How the file begins

The opening lines of sample-csv-50mb.csv, exactly as they appear in the file.

00000000  69 64 2c 66 69 72 73 74  5f 6e 61 6d 65 2c 6c 61 |id,first_name,la|
00000010  73 74 5f 6e 61 6d 65 2c  65 6d 61 69 6c 2c 70 68 |st_name,email,ph|
00000020  6f 6e 65 2c 63 69 74 79  2c 63 6f 75 6e 74 72 79 |one,city,country|
00000030  2c 73 69 67 6e 75 70 5f  64 61 74 65 2c 70 6c 61 |,signup_date,pla|

Preview

Creates the file in your browser and shows its first 64 KB.

Where 50 MB matters

A 52,428,800-byte file: exactly the size at which Git hosting on GitHub starts warning about large files, and about the limit for a zipped AWS Lambda package uploaded directly.

All 50 MB sample files

Use this file for

Testing email attachment limits
Testing data import features
Checking delimiter and encoding detection

Testing notes for CSV

Splitting each line on commas breaks on quoted fields. Test with the quoted-fields sample before trusting an importer.
Excel opens CSV files using the system locale, so a file that works in one country shows everything in one column in another.

CSV format reference

Technical details

File name	sample-csv-50mb.csv
Format	CSV (Comma-separated values)
Extension	.csv
MIME type	text/csv
Size	52,428,800 bytes (50 MB)
Kind	Text
SHA-256	72ad864af7d5c6aea19126668c2ac83880450bcf78ee7f3a46fa0ca7a81afc1c
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	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-csv-50mb.csv     # Linux
shasum -a 256 sample-csv-50mb.csv # macOS

On Windows, run Get-FileHash sample-csv-50mb.csv -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 50 MB?: Yes. It is 52,428,800 bytes, which is 50 MB in the binary units that operating systems and server limits use (1 KB = 1,024 bytes).
What is inside the 50 MB CSV file?: A header row and 383,801 rows of fictional customer records in 12 comma-separated columns. The notes field of the last row is lengthened so the file lands on the exact byte count.
Do the CSV samples have a header row?: Yes. The first line names the columns, and the sized samples use CRLF line endings as RFC 4180 describes.

Download