CSS Grid Generator

What is a CSS Grid Generator?

CSS Grid is the layout system for two-dimensional designs — arranging content into rows and columns simultaneously. It is the most powerful layout tool in CSS, but its syntax for defining tracks can be unfamiliar. A grid generator lets you set up a grid visually and copy the correct CSS.

Our CSS Grid Generator lets you choose how many columns and rows you want and the gap between cells, rendering a live preview so you can see the structure instantly, then copy the grid-template declarations.

How to Build a Grid

• Set the number of columns with the slider
• Set the number of rows
• Adjust the gap between grid cells
• Watch the live preview build the grid
• Copy the generated CSS using repeat() and 1fr units

Understanding fr Units and repeat()

The fr unit represents a fraction of the available space. grid-template-columns: repeat(3, 1fr) creates three equal columns that share the container width, automatically adapting as it resizes. This is far more flexible than fixed pixel widths.

The repeat() function is shorthand for declaring many identical tracks, so repeat(4, 1fr) is the same as writing 1fr 1fr 1fr 1fr. Together they make responsive, evenly distributed grids trivial to define.

Grid vs Flexbox

Use CSS Grid for two-dimensional layouts where you control both rows and columns — page layouts, image galleries, dashboards, and card grids. Use Flexbox for one-dimensional arrangements like toolbars and button groups. The two often work together, with Grid handling the overall page structure and Flexbox aligning content within cells. This tool generates clean Grid CSS in your browser.