Graph Paper Generator (Printable Grid, Dot and Lined Paper)

Make your own printable paper instead of buying a pad: square graph paper for maths and plotting, engineering paper, dot grids for bullet journals, lined paper in the US rulings, isometric triangles for 3-D sketches, hexagon maps for games, music staves, Cornell note pages and Korean 원고지 manuscript paper. The pages are drawn as vector lines in a PDF, so they print sharp at any size and the spacing is exact, as long as you print at 100%. Everything is generated in your browser.

How to use this tool

1. Choose the paper type, page size and orientation.
2. Set the spacing (in millimetres or inches), the line weight and the colour.
3. Set the margins and, for engineering paper, how often a heavier line appears.
4. Press Calculate, check the preview, then download the PDF and print it at "Actual size".

Formula

squares across = floor((page width − 2 × margin) ÷ spacing) · squares down = floor((page height − 2 × margin) ÷ spacing)

The grid is centred in the space left by the margins. PDF units are points, where 1 mm = 72 ÷ 25.4 ≈ 2.835 pt. Lined paper uses the standard rulings: wide 8.7 mm (11/32 in), college 7.1 mm (9/32 in) and narrow 6.35 mm (1/4 in), below a header band two lines high. Isometric paper uses an equilateral triangle grid; a staff is four line gaps high. 원고지 has 20 squares per row with a half-square gap between rows.

Example

A4 portrait with 10 mm margins leaves 190 × 277 mm. With 5 mm squares that is floor(190 ÷ 5) = 38 columns and floor(277 ÷ 5) = 55 rows: 2,090 squares, centred with 1 mm to spare top and bottom. On US Letter with half-inch margins and quarter-inch squares the grid is exactly 30 × 40.