Generate an Integer Matrix

The Generate an Integer Matrix tool creates a structured grid of random integers. You control the number of rows and columns, as well as the minimum and maximum values. The matrix updates instantly, making it perfect for creating sample datasets, filling tables, or running layout and format tests.

You can switch between space-separated or comma-delimited output, pad numbers with leading zeros, and even expand the output area to see more at once. It runs entirely in your browser and doesn’t require any uploads or downloads until you’re ready to export.

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Options




Pad with zeros
Comma-delimited rows
Maximize output

How to Use:

  • Enter how many Rows and Columns you want the matrix to have
  • Set a Min Value and Max Value for the random numbers
  • Toggle Pad with zeros to align numbers with leading zeros (e.g., 001, 042)
  • Enable Comma-delimited rows to use commas instead of spaces between values
  • Toggle Maximize output to increase the size of the output box
  • Click Generate to create the matrix instantly
  • Use Copy Output or Export to File to save your matrix
  • Hit Clear All to reset everything and start fresh

What Generate an Integer Matrix can do:

This tool gives you a live, customizable way to generate 2D integer arrays. Whether you’re building a grid, testing a parser, or preparing visualizations, you can control formatting, spacing, and number styling on the fly. The output updates as soon as you change values, so you always know what you’re getting.

Example:

Rows: 3 Columns: 4 Min: 10 Max: 99

Output:

56 23 88 94
71 65 11 42
99 32 78 20

Common Use Cases:

Use this tool to generate sample datasets for spreadsheets, test data for input fields, practice with arrays and loops in coding tutorials, or fill tables with placeholder values. Teachers use it to generate random math problems. Developers use it to test table formatting or CSV exports. It’s fast, customizable, and ready for any matrix-based task.

Useful Tools & Suggestions:

If you’re building grids with Generate an Integer Matrix, try Generate a Multi-integer Sequence first to define the data you’ll fill it with. And once it’s built, Color Integers adds a nice visual layer to spot patterns or outliers.

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