What “1/4 inch” means
Quarter-inch graph paper uses a 0.25″ (6.35 mm) grid. We store spacing in millimeters internally, so the preset is exactly 6.35 mm — not a rounded 6 mm. There is no separate /6.35mm/ page; this URL owns the intent.
Typical uses
US school worksheets, engineering doodles on Letter paper, and any sketch that expects a quarter-inch scale. For metric classroom grids, open the Chinese graph paper tool and set 5 mm or 10 mm.
Printing at true size
Choose Actual size (not Fit to page). Lines are vector-drawn for sharp PDFs. Adjust margins, line weight, and bold-every-N as needed. Browse more templates on printable paper, or open the parent graph paper generator for any custom grid.