Scale before you chalk
Use the grid calculator to find scale factor and target cell size before marking the wall.
Large-scale transfer
Grid tools for muralists
Turn an approved sketch or photo into a wall-ready reference. Match row and column counts across surfaces, size cells you can mark on site, and label sections for a mural crew.
Open the grid makerPractical cell sizes
Choose a grid count that produces cells you can measure repeatedly with tape or chalk line.
Shared coordinates
Labels help divide the wall into assigned areas while keeping everyone aligned to one reference.
Suggested workflow
- 01
Crop the approved reference to the wall aspect ratio.
- 02
Calculate scale factor and physical cell size on the wall.
- 03
Transfer major landmarks first, then detail sections panel by panel.
Practical checks
Before you mark the wall
Confirm the wall ratio
Measure the paintable width and height, then crop the source art to the same ratio before adding grid lines.
Choose a cell size people can repeat
A 4 m wall with 20 columns gives 20 cm cells. If the design has faces or lettering, use smaller cells only where detail needs it.
Label crew sections at the edges
Keep row and column labels outside the painted area so the team can reference coordinates without covering the artwork.