Developer Tools

Grid Generator Calculator

Generate CSS Grid layout code. Calculate grid columns, rows, and gaps for responsive grid layouts.

Use Grid Generator Calculator to get instant results without uploads or sign-ups. Everything runs securely in your browser for fast, reliable output.

Your results will appear here.

Ready to run.

About this tool

CSS Grid is the most powerful layout system in CSS. Our Grid Generator creates grid container code with columns, rows, and gap properties.

Grid handles two-dimensional layouts effortlessly. Perfect for page layouts, image galleries, dashboards, and complex designs. Use with auto-fit/auto-fill for responsive grids.

Usage examples

3-Column Grid

Equal width columns

grid-template-columns: repeat(3, 1fr); gap: 20px;

Responsive Gallery

Auto-fit columns

grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));

How to use

  1. Enter "Number of Columns".
  2. Enter "Number of Rows".
  3. Set "Gap Size" between grid items.
  4. Click "Generate" to get CSS Grid code.

Benefits

  • CSS Grid code
  • Two-dimensional layouts
  • Responsive columns
  • Custom rows and gaps
  • Modern layout system
  • Copy-paste ready

FAQs

What is CSS Grid?

CSS Grid is a two-dimensional layout system for rows AND columns. Properties: display: grid; (container), grid-template-columns, grid-template-rows, gap. More powerful than Flexbox for complex layouts. Supported in all modern browsers (IE11 needs prefixes/fallbacks).

What is fr unit in CSS Grid?

fr (fraction) unit represents fraction of available space. grid-template-columns: 1fr 2fr; creates two columns, second is twice as wide as first. 1fr 1fr 1fr = equal columns. Better than percentages - accounts for gaps automatically. Flexible and responsive.

How do I create a responsive grid?

Responsive grid: grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); auto-fit creates as many columns as fit. minmax(250px, 1fr) sets min 250px, max 1fr. No media queries needed! For more control, use media queries to change column count.

What is the difference between grid gap and margin?

gap (formerly grid-gap): space between grid items, doesn't add space on outer edges. margin: space around items, including edges. Use gap for grid spacing - cleaner, no edge spacing issues. gap: 20px; adds 20px between all items. Works with Flexbox too (modern browsers).

How do I span items across multiple columns?

Span columns: grid-column: span 2; (spans 2 columns) or grid-column: 1 / 3; (starts at line 1, ends at 3). Span rows: grid-row: span 2; Useful for featured items, headers, footers. Can create magazine-style layouts with items of different sizes.

Should I use Grid or Flexbox?

Use both! Grid for: page layouts (header, sidebar, main, footer), card grids, two-dimensional layouts, alignment in both dimensions. Flexbox for: navigation menus, button groups, single row/column layouts, centering items. Grid is layout-first, Flexbox is content-first. Combine for best results.

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