Generate Random CSV
Quickly generate random CSV files. Runs entirely in your browser, so your data never leaves your device.
Output
The result appears here as you type.
How to use Generate Random CSV
- 1. Set the shape. Enter Data rows and Columns to decide how large the generated CSV is, matching the size of the sample dataset you need.
- 2. Choose the kind of values. Set Values to Mixed for a blend of text and numbers, Words for text-only cells, or Numbers for a fully numeric dataset.
- 3. Decide on a header row. Turn on Add a header row to include column names like column1, column2 at the top, matching how most spreadsheet imports expect data.
- 4. Copy the CSV. Copy the generated CSV text into a spreadsheet, database import, or test fixture. Regenerate for a different sample shape any time.
When to use Generate Random CSV
Generate Random CSV produces sample comma-separated data at a size and value type you choose, useful whenever you need mock data for an import, a demo, or a test without exporting from a real spreadsheet.
- Testing a CSV import feature. A developer building a bulk-upload feature wants a sample CSV of a specific row and column count to confirm the parser handles the expected shape correctly.
- Populating a spreadsheet demo. Someone building a tutorial about spreadsheet formulas wants quick numeric sample data to paste in, rather than manually typing rows of placeholder numbers.
- Load-testing a data pipeline. An engineer testing how a data processing script handles larger files wants a CSV with many rows and columns to confirm performance before pointing it at production data.
- Building a sample dataset for a tutorial. A writer creating a data analysis walkthrough wants a small CSV with a header row and mixed values to use as the example dataset throughout the article.
Examples
Ten random rows across four columns
Output
column1,column2,column3,column4 cedar,42,willow,17 …
About the Generate Random CSV tool
Generate Random CSV is a free online tool that works entirely inside your web browser. Quickly generate random CSV files. Because the processing happens on your own device, nothing you enter is uploaded, logged or stored anywhere.
This page is one of 120 Random utilities on EditSafely. Each one does a single job well, and all of them follow the same rule: your input stays on your machine.
You can shape the output with 4 settings, including Data rows, Columns, Values and Add a header row, and the result refreshes the moment you change one. A worked example further down the page shows exactly what the tool produces for a real input.
Because nothing leaves your device, the tool is suitable for sensitive content such as internal documents, credentials or customer data. It also responds instantly, since every keystroke is handled on your own machine rather than by a remote API.
Frequently asked questions
Is Generate Random CSV free to use?
Yes, it is completely free. All 2,658 tools on EditSafely work without an account, a subscription or usage limits.
Does the generator send anything to a server?
Everything happens locally. Your browser downloads the tool's code once, then does all the processing itself; nothing you enter is transmitted, stored or logged. You can even go offline after the page loads and it will still work.
How do I get a different result?
Run the generator again. Each run is computed fresh on your device, and any options you change are applied to the next result immediately.
Do I need to sign up or install anything?
No. The tool works in any modern browser on desktop, tablet or phone. There is no account to create, no extension to add and no software to install.
How do I use the result?
The output panel has a one-click copy button, and you can keep refining the input while you work; the result updates in place as you type.