Column Width
Equal columns divide the usable width after the gaps between columns are removed.
Column Width
Layout grids · 3 inputs
How to use this calculator
- Enter live width in mm.
- Enter columns in count.
- Enter gutter in mm.
- Select Calculate and keep the output unit with the answer.
Before you use the answer
Confirm the production specification with the printer or delivery platform before choosing dimensions. Keep trim, bleed, live area and pixel density distinct. Numerical consistency helps prevent avoidable rework, but a final proof remains necessary to judge the finished layout.
There is one fewer internal gutter than columns; outer margins are already excluded.
Does it save my inputs?
No calculation history is stored by this website. The calculator works locally in your browser. See the privacy policy for hosting and contact details.
Why might a result be approximate?
Measurement uncertainty, ideal-model assumptions and floating-point rounding can all matter. Displaying more digits does not improve the original measurement.
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