1. Start with the matching paper size
A4 is 210 × 297 mm. US Letter is 215.9 × 279.4 mm (8½ × 11 inches). Choose the same size in the generator, your PDF viewer and your printer tray. The 8 × 11-inch option is a custom size and is narrower than Letter.
2. Download the PDF
Use a ready-made PDF or the Download PDF button. PDF keeps lines sharp and records the intended page dimensions. PNG is a raster image; a photo-printing app may automatically resize it.
3. Select Actual size or 100%
Open the PDF print dialog. Turn off Fit, Shrink oversized pages and any scaling option. Match portrait or landscape to the PDF. Print one test sheet first. The Print button opens the generated PDF in a separate browser tab so you can use your PDF viewer’s print command.
4. Check with a ruler
For 5 mm paper, measure ten complete cells: they should span 50 mm. Four quarter-inch cells should span one inch (25.4 mm). Measuring a group of cells is more reliable than measuring a single thin line.
Download a vector PDF with a 50 mm reference line and a 1-inch square. Print it at 100% before a measurement-sensitive project.
Download scale checkIf something looks wrong
| Problem | What to check |
|---|---|
| Squares are too small | Turn off Fit to page and use 100%. |
| Outer lines are cut off | Use a larger margin; most home printers cannot print edge to edge. |
| Grid lines are too faint | Pick a darker color or thicker line weight; check ink-saving mode. |
| An exact cell count changes size | Fixed-count grids keep their row and column count and fit inside the margins. Their physical cell size changes with page size. |
Useful spacing conversions
| Setting | Exact spacing | Meaning |
|---|---|---|
| 5 mm | 5 mm | 2 squares per centimeter |
| 1 cm | 10 mm | 1 square per centimeter |
| ⅛ inch | 3.175 mm | 8 squares per inch |
| ¼ inch | 6.35 mm | 4 squares per inch |
| ½ inch | 12.7 mm | 2 squares per inch |
| 1 inch | 25.4 mm | 1 square per inch |