🧮 How to Use the PX to Grid Columns Converter (With Live Preview)

Design systems rely heavily on consistent grids for layouts. The PX to Grid Columns Converter helps you calculate individual column widths based on your total container width, number of columns, and gutter size. Whether you’re building a 12-column grid or a custom layout, this tool simplifies the math.

🎯 What Is This Tool?

This tool calculates:

• The exact column width
• The total gutter space between columns
• A live visual layout preview
• Export-ready output in JSON format

Ideal for web designers, front-end developers, and anyone working with responsive grid systems.

✅ Step-by-Step: How to Use It

1. Enter the Container Width

In the first input field, enter the total width of your grid container in pixels.

• Example: 1200

This could represent a full-width container or a section inside your layout.

2. Choose Number of Columns

Select how many columns your layout should have:

• Popular choices: 12, 16, 24
• Example: 12 is standard in Bootstrap, Tailwind, and many web design systems

3. Enter the Gutter Width

This is the horizontal spacing between each column.

• Example: 24 means 24px between each pair of columns
• If no spacing is needed, you can enter 0

4. View the Results

Once all inputs are filled:

• 🟦 Column Width shows the exact pixel width of each column
• 🔲 Total Gutter Space displays the combined space taken by gutters
• ✅ Live Preview: See how columns and gutters render inside the container

5. Copy the Output

Click the 📋 Copy JSON Output button:

• This copies a breakdown like:

{
“container”: “1200px”,
“columns”: 12,
“gutter”: “24px”,
“totalGutterSpace”: “264px”,
“columnWidth”: “78px”
}

• Use this in your dev specs, design handoff, or CSS framework setup

🧪 Example Calculation

Input:

• Container width: 1200px
• Column count: 12
• Gutter width: 24px

Output:

• Total gutters: (12 – 1) × 24 = 264px
• Column width: (1200 – 264) ÷ 12 = 78px

🧠 Pro Tips

• Align column widths to your spacing system (like 4pt or 8pt)
• Export results as tokens for CSS-in-JS, Tailwind config, or SCSS maps
• Use 0 gutter to build column-only grid systems for tighter layouts

🎉 Why This Tool Helps

✅ Saves time doing layout math
✅ Ensures responsive and consistent grid behavior
✅ Helps bridge design & development workflows
✅ Supports flexible column systems beyond 12-grid layouts

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