Guide
Graph paper squares per inch
4x4, 5x5, 10x10 and metric rulings, and what each one fits on a page.
Short answer
Standard US graph paper has 4 squares per inch, so each square is a quarter inch (6.35 mm), sold as "4x4" or quad-ruled. 5 squares per inch (5.08 mm) is the other common US ruling, and the metric standard is 5 mm squares, about 5.08 per inch.
Inch rulings
| Ruling | Square size | Squares on Letter | Print it |
|---|---|---|---|
| 4 squares per inch (quarter inch, "4x4") | 6.35 mm | 30 × 40 | 4 per inch |
| 5 squares per inch ("5x5") | 5.08 mm | 37 × 50 | 5 per inch |
| 8 squares per inch | 3.18 mm | 60 × 80 | 8 per inch |
| 10 squares per inch (engineering, "10x10") | 2.54 mm | 75 × 100 | 10 per inch |
Metric rulings
| Ruling | Per inch | Squares on A4 | Print it |
|---|---|---|---|
| 5 mm squares | 5.1 | 37 × 54 | 5 mm |
| 1 cm squares | 2.5 | 18 × 27 | 10 mm |
| 2 mm squares | 12.7 | 93 × 136 | 2 mm |
What "4x4" and "10x10" mean
The label counts squares per inch in each direction, so 4x4 is four squares across and four down in every inch: a quarter-inch grid. It does not mean 4 mm. 10x10 is the fine grid on engineering and drafting paper, often with a bold line every inch so you can count in tenths. 8 squares per inch suits pixel art and detailed plans where a quarter inch is too coarse.
Which ruling to choose
- Maths homework: 4 per inch or 5 mm; one digit per square.
- Floor plans: 4 per inch, so one square is a foot at quarter-inch scale.
- Plotting data: 10 per inch or 2 mm, with bold major lines to count by.
- Notes: 5 mm, which matches a line of handwriting.
Frequently asked questions
How many squares on graph paper is an inch?
Four on standard US quad-ruled paper, so each square is a quarter inch. Other rulings are 5, 8 and 10 squares per inch; metric 5 mm paper has about 5.1.
Is 4x4 graph paper 4 squares per inch?
Yes. 4x4 means 4 squares per inch in both directions, a quarter-inch grid. It is the most common US ruling.
What is 10 squares per inch graph paper?
Engineering or drafting ruling: squares 2.54 mm across, usually with a bold line every inch so measurements can be read in tenths.
What is the difference between 4x4 and 5x5 graph paper?
Square size. 4x4 squares are 6.35 mm; 5x5 squares are 5.08 mm, so a 5x5 sheet has 25 percent more squares in each direction.