1 mm
210 × 297 squares on A4
The finest standard metric grid — 210 × 297 squares on A4. Used for PCB layout, microelectronics, and ultra-dense scientific data logging.
Ultra-finePCB layoutPrecision
Every grid size
Graph paper sizes
Pick one of 18 grid sizes from 1 mm to 1 inch, preview it on the page and download a printable vector PDF free.
Live preview · PDF rendered at full resolution
Grid size comparison table
| Grid size | Squares on A4 | Squares on Letter | Typical use | Page |
|---|---|---|---|---|
| 1 mm | 210 × 297 | 215 × 279 | Technical drawing, microscopy sketches | 1 mm graph paper |
| 2 mm | 105 × 148 | 107 × 139 | Field notebooks, dense data logs | 2 mm graph paper |
| 3 mm | 70 × 99 | 71 × 93 | Science notebooks, detailed lab graphs | 3 mm graph paper |
| 4 mm | 52 × 74 | 53 × 69 | Architectural sketches, stitch charts | 4 mm graph paper |
| 5 mm | 42 × 59 | 43 × 55 | EU secondary school, function graphs | 5 mm graph paper |
| 6 mm | 35 × 49 | 35 × 46 | Bullet journals, planners | 6 mm graph paper |
| 7 mm | 30 × 42 | 30 × 39 | Handwriting, mixed text and diagrams | 7 mm graph paper |
| 8 mm | 26 × 37 | 26 × 34 | Large handwriting, idea maps | 8 mm graph paper |
| 9 mm | 23 × 33 | 23 × 31 | Storyboards, game prototypes | 9 mm graph paper |
| 1 cm | 21 × 29 | 21 × 27 | Primary-school maths, area exercises | 1 cm graph paper |
| 2 cm | 10 × 14 | 10 × 13 | Early years, classroom posters | 2 cm graph paper |
| 1/10 in | 82 × 116 | 85 × 110 | Stripboard layouts, decimal inches | 1/10 in graph paper |
| 1/8 in | 66 × 93 | 68 × 88 | Floor plans at 1/8 in = 1 ft, quilting | 1/8 in graph paper |
| 1/6 in | 49 × 70 | 51 × 66 | Typewriter spacing, legacy log sheets | 1/6 in graph paper |
| 1/5 in | 41 × 58 | 42 × 55 | Engineering pads, college lab graphs | 1/5 in graph paper |
| 1/4 in | 33 × 46 | 34 × 44 | US homework, plans at 1/4 in = 1 ft | 1/4 in graph paper |
| 1/2 in | 16 × 23 | 17 × 22 | Classroom demos, garden plans | 1/2 in graph paper |
| 1 in | 8 × 11 | 8 × 11 | Battle maps, kindergarten games | 1 in graph paper |
Metric grid sizes
Millimetre graph paper
From fine 2 mm data-logging paper to large 1 cm classroom grids — all metric standards covered.
2 mm
105 × 148 squares on A4
Fine metric grid for field surveys, high-resolution data sheets, and small-scale engineering sketches.
High precisionPCB layout
3 mm
70 × 99 squares on A4
Preferred for scientific notation, detailed data logging, and engineering sketches. Balances readability and density.
ScienceEngineeringData logs
4 mm
52 × 74 squares on A4
Between 3mm and 5mm — a useful intermediate for architectural sketches and drafting layouts.
ArchitectureDraftingDesign
5 mm
42 × 59 squares on A4
Five millimetre squares — half the size of 1 cm. The standard metric grid for secondary school mathematics and detailed graphs.
EU standardSecondary school
6 mm
35 × 49 squares on A4
Comfortable medium grid for bullet journalling, note-taking, and mixed text-and-graph pages.
Bullet journalNote-takingGeneral use
7 mm
30 × 42 squares on A4
Matches standard handwriting ruling — ideal for pages combining writing with simple graphs or diagrams.
HandwritingJournallingMixed use
8 mm
26 × 37 squares on A4
Coarser grid suited to large-font notes, children's graph practice, and quick idea sketches.
Large fontChildrenSketching
9 mm
23 × 33 squares on A4
Near-centimetre spacing for rough storyboards, comic strip layouts, and low-density grids.
StoryboardLayoutSketching
1 cm (10 mm)
21 × 29 squares on A4
The most widely used metric grid. Ideal for general homework, lab reports, and classroom maths. Large enough to write comfortably inside each cell.
EU standardGeneral educationLab reports
2 cm (20 mm)
10 × 14 squares on A4
Large-cell grid for primary school first graphs, poster design, and high-visibility planning sheets.
Primary schoolPoster designVisual planning
Imperial grid sizes
Inch-based graph paper
Standard US imperial sizes for homework, engineering, and technical drawing.
1/10 inch
85 × 110 squares on Letter
The finest common imperial grid — 10 squares per inch, aligns exactly with metric (1/10 in = 2.54 mm).
Fine imperialTechnicalMetric-compatible
⅛ inch
68 × 88 squares on Letter
Fine grid for detailed technical illustrations, PCB sketches, and architecture plans at small scale.
TechnicalArchitecture8 per inch
1/6 inch
51 × 66 squares on Letter
Six squares per inch — used in classic engineering log paper and traditional drafting standards.
EngineeringLog paperDrafting
⅕ inch
42 × 55 squares on Letter
Five squares per inch — more precise than ¼ inch. Common for engineering and scientific graphing.
Engineering5 per inchUS standard
¼ inch
34 × 44 squares on Letter
The US standard — 4 squares per inch. Default grid for American maths textbooks and school homework.
US standard4 per inchHomework
½ inch
17 × 22 squares on Letter
Two squares per inch — good for large-format planning, classroom demonstrations, and rough layout sketches.
Large cellsPlanningClassroom
1 inch
8 × 11 squares on Letter
Large-square grid for primary school maths, learning to read graphs, and large-format data visualisation.
Primary schoolLarge format
Paper formats
Five paper sizes — portrait and landscape
Every grid size is available in all five paper formats.
A3
297 × 420 mm
Double A4. Preferred for engineering drawings, isometric sketches, and large classroom charts.
Generate A3 →Letter
8.5 × 11 inches
US standard for schools, offices, and home printing. Works with all imperial grid sizes.
Generate Letter →Legal
8.5 × 14 inches
Taller than Letter. Useful for longer data tables, Gantt charts, and lab worksheets needing more rows.
Generate Legal →All formats are also available in A5 (148 × 210 mm) — notebook-size, perfect for field data cards and compact handouts. Select A5 in the generator's paper size menu.
Frequently asked questions
What is the most common graph paper grid size?+
For metric users, 1 cm and 5 mm are the most common. For US users, ¼ inch is standard. For scientific work, 2 mm and 3 mm are preferred for density.
How many squares does 1 cm graph paper have on A4?+
A4 paper is 210 × 297 mm. At 1 cm spacing you get 21 columns × 29 rows = 609 squares in portrait orientation.
What grid size should I use for maths homework?+
1 cm for most homework and general use. 5 mm for detailed graphs. ¼ inch if you are in the US and using a standard maths exercise book.
Can I get the same grid size in different paper formats?+
Yes. Every grid size is available in A4, A3, Letter, Legal, and A5. Use the generator above and change the paper size while keeping your grid size fixed.
Free graph paper — every type, any size
Cartesian, isometric, dot grid, polar, log-log, engineering, lined, and more — customise color, size, and line weight. Free PDF in seconds.
Browse all graph paper types →