Printable Graph Paper
Exact-millimetre grid, lined, dot, isometric, and hexagon paper on letter or A4.
Print at 100% scale (“actual size”) to keep millimetre spacing exact.
mm ↔ inch conversions (at 96 dpi)
The generator works in true millimetres: letter paper is exactly 215.9 × 279.4 mm and A4 is exactly 210 × 297 mm. One inch is defined as exactly 25.4 mm, and CSS reference pixels run at 96 per inch, so a 5 mm grid cell is 18.9 px on screen and 5 real millimetres on paper. Print at 100% scale — “fit to page” rescales everything.
| Millimetres | Inches | Pixels @ 96 dpi | Reference |
|---|---|---|---|
| 1 mm | 0.039″ | 3.8 px | |
| 2 mm | 0.079″ | 7.6 px | |
| 5 mm | 0.197″ | 18.9 px | standard graph cell |
| 10 mm | 0.394″ | 37.8 px | 1 cm grid / centimetre paper |
| 12.7 mm | 0.500″ | 48.0 px | half inch |
| 25.4 mm | 1.000″ | 96.0 px | 1 inch (exact) |
| 50 mm | 1.969″ | 189.0 px | |
| 100 mm | 3.937″ | 378.0 px | |
| 210 mm | 8.268″ | 793.7 px | A4 width |
| 215.9 mm | 8.500″ | 816.0 px | Letter width |
| 279.4 mm | 11.000″ | 1056.0 px | Letter height |
| 297 mm | 11.693″ | 1122.5 px | A4 height |
Paper sizes for reference: US Letter 215.9 × 279.4 mm (8.5 × 11 in) and A4 210 × 297 mm. A 10 mm-margin A4 sheet at 5 mm spacing fits 38 × 55 = 2,090 squares.
Quick Answer
This free graph paper generator prints exactly measured paper in your browser: square grids in 2 mm to 1 cm cells, college- or wide-ruled lined sheets, dot grids, isometric triangles, and hexagons. Choose letter or A4, set the margin, line weight, and color, preview it live, then print it or download a vector PDF built with true millimetre math — every square comes out the size it says.
How It Works
Pick a paper type: square grid, lined, dot, isometric, or hexagon
Choose letter or A4, then a spacing preset like 5 mm or college-ruled 7.1 mm
Adjust margin, line weight, and color while the live preview updates
Print at 100% scale, or download the exact vector PDF
Key Facts
- Five variants: square grid, lined/ruled, dot grid, isometric, hexagon
- Letter (215.9 × 279.4 mm) and A4 (210 × 297 mm) — exact millimetre sizes
- Square presets at 2, 5, and 10 mm plus any custom spacing
- Lined presets: wide 8.7 mm, college 7.1 mm, narrow 6.35 mm
- Margin, line weight, and ink color controls
- Live on-screen preview plus vector PDF download at true scale
- Everything computed client-side — no uploads, no account
- mm ↔ inch conversion reference table included below
Frequently Asked Questions
Is the graph paper really exact — will 5 mm squares print as 5 mm?
Yes. The PDF export is built in millimetres using the true page dimensions (letter 215.9 × 279.4 mm, A4 210 × 297 mm), so every line lands exactly where the math puts it. When printing from the browser, choose 100% scale / “actual size” rather than “fit to page” to keep the calibration exact.
What graph paper variants can I generate?
Square grid (2–25 mm cells), lined paper in wide-ruled 8.7 mm, college-ruled 7.1 mm, and narrow 6.35 mm, a dot grid, isometric triangle paper, and hexagon paper. Each variant has presets plus custom spacing, on either letter or A4.
How many squares fit on A4 5 mm graph paper?
A4 is 210 mm wide and 297 mm tall. At 96 dpi that is 793.7 × 1122.5 px. With a standard 10 mm margin, the printable area is 190 × 277 mm, which fits 38 columns × 55 rows of 5 mm squares — 2,090 squares per sheet.
Is it free to print and download?
Completely free with no sign-up, no watermark, and no limit. Generate as many sheets as you need; the PDF is created locally in your browser and saved straight to your device.
Can I use this as engineering or math homework paper?
Yes — the 2 mm and 5 mm square grids are standard for math graphing, engineering sketches, and lab plots. The isometric and hexagon variants suit 3D sketching, game maps, and bullet-journal layouts.