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
by grid size
Free printable graph paper in every standard grid size — metric and imperial. A4, A3, Letter, Legal. Download a vector PDF instantly.
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 × 10 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.
Quick reference
Grid size comparison table
Use this table to choose the right grid size for your purpose.
| Grid size | Squares (portrait) | Best for | Detail level |
|---|---|---|---|
| 1 mm | 210 × 297 on A4 | PCB layout, microelectronics, ultra-dense data | Ultra-high |
| 2 mm | 105 × 148 on A4 | High-precision data, PCB, field surveys | Very high |
| 3 mm | 70 × 99 on A4 | Scientific notation, lab data, engineering | High |
| 4 mm | 52 × 74 on A4 | Architectural sketches, technical drafting | High |
| 5 mm | 42 × 59 on A4 | EU secondary school, detailed graphs | Medium |
| 6 mm | 35 × 49 on A4 | Bullet journalling, mixed notes and diagrams | Medium |
| 7 mm | 30 × 42 on A4 | Handwriting-spaced notes, journalling | Medium |
| 8 mm | 26 × 37 on A4 | Large-font notes, children's practice | Low |
| 9 mm | 23 × 33 on A4 | Storyboarding, rough layout sketches | Low |
| 1 cm | 21 × 29 on A4 | EU classroom, homework, science lab reports | Standard |
| 2 cm | 10 × 14 on A4 | Primary school, poster design, visual planning | Low |
| 1/10 in | 85 × 110 on Letter | Fine technical drawing, electronics (US) | Very high |
| 1/8 in | 68 × 88 on Letter | Technical illustration, PCB sketching (US) | High |
| 1/6 in | 51 × 66 on Letter | Engineering log paper, traditional drafting (US) | High |
| 1/5 in | 42 × 55 on Letter | US engineering graphing, lab notebooks | Medium |
| 1/4 in | 34 × 44 on Letter | US standard homework and plotting | Standard |
| 1/2 in | 17 × 22 on Letter | Planning sheets, classroom demonstrations | Low |
| 1 in | 8 × 11 on Letter | Primary school, introducing coordinates | Very low |
PDF Generator
Generate graph paper by size — free PDF
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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.
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