CSS Grid Layout Generator is a free online tool that helps front-end developers visually configure CSS Grid properties and preview the results in real time. It supports full configuration of container properties (grid-template-columns, grid-template-rows, gap, justify-items, align-items, justify-content, align-content) and item properties (grid-column, grid-row, justify-self, align-self), generating copy-paste-ready CSS code with a single click.
grid-template-columns defines the size of column tracks. Common values include 1fr 1fr 1fr (three equal columns), 200px 1fr (fixed + adaptive), or repeat(3, 1fr) (repeat syntax).
grid-template-rows defines the size of row tracks using the same syntax, such as auto 1fr auto.
gap defines the spacing between grid cells. You can set row-gap and column-gap separately.
justify-items defines horizontal alignment of cell content: start, center, end, or stretch (default).
align-items defines vertical alignment of cell content: start, center, end, or stretch (default).
justify-content and align-content define alignment when the grid container is larger than the grid content.
grid-column defines the column range an item occupies, e.g. 1 / 3 means from line 1 to line 3.
grid-row defines the row range using the same syntax as grid-column.
justify-self and align-self define alignment for individual items, overriding the container-level settings.
Yes, completely free. It runs entirely in your browser with no server-side processing. No registration or login required.
Flexbox is a one-dimensional layout system (row or column), ideal for component-level layouts. Grid is a two-dimensional layout system that controls both rows and columns simultaneously, making it perfect for overall page layouts. They complement each other well.
No. All operations are performed locally in your browser. No data is sent to any server. The tool works offline too.
All modern browsers including Chrome, Firefox, Safari, and Edge. Internet Explorer 11 does not support CSS Grid.
fr is a fractional unit in CSS Grid representing a portion of the available space. For example, 1fr 1fr 1fr divides available space equally among three columns.
Use repeat(auto-fit, minmax(250px, 1fr)) for responsive grids where the number of columns adjusts automatically based on container width.
Use the start / end format, e.g. 1 / 3 means starting at line 1 and ending at line 3 (spanning 2 columns). You can also use span 2 to span 2 columns.