Generator · Print-true
Printable squared paper, A4, exact to the millimetre
Maths-book squared paper you can measure with a ruler and be right. A4 with 5 mm squares to start — change it to 1 cm, 7 mm, or anything else — generated in your browser as vector geometry in real millimetres, with no watermarks, no sign-ups, and nothing uploaded. Print it or save it as a PDF from the same dialog.
How this generator works
The sheet you see is an SVG drawn in physical units: every coordinate is a real millimetre, not a screen pixel. When you change the square size, the page computes how many whole squares fit inside the printable area — the sheet minus your margin — and centres the grid, so you never get sliced partial squares along the edges. The readout reports the geometry it actually produced: sheet size, true spacing in both units, and the exact column-by-row count.
The defaults are the British school sheet rather than the American one. A4 is selected, the squares start at 5 mm, and the margin is 10 mm — a round metric number instead of the 12.7 mm that is really half an inch wearing metric clothes. That is the only real difference between this page and the graph paper generator, which starts from US Letter; both drive the same engine, and either can produce either sheet.
Printing is where most squared-paper downloads quietly fail, because "Fit to page" rescales a fixed PDF and 5 mm squares arrive at 4.7 mm. This page sets the print size to match your chosen sheet exactly and keeps the grid inside the margin, within the mechanical dead zone of essentially every consumer printer, so nothing needs rescaling. Leave the dialog at 100% or "Actual size" and the millimetres on paper match the millimetres on the readout — the methodology page shows how to verify it with a ruler. The honest limits: if the dialog is set to fit or shrink, no generator can save the measurements; line weights below about 0.2 mm render inconsistently on consumer printers, which is why the default is 0.3 mm; and the margin stops at 5 mm rather than pretending borderless printing works everywhere.