Graph paper looks like a solved problem — it’s just squares — until you need triangles for an isometric sketch, decades for a log plot, or a cue column for lecture notes. This is the working map of the ten grids the generator can draw: what each one is, who reaches for it, and the spacing that makes it usable.

Square (Cartesian / quad ruled)

The default for a reason. Square grid suits math homework, floor plans, cross-stitch and pixel-art planning, data plotting, and handwriting practice for people who write between lines.

Spacings that work: 5 mm is the metric workhorse; 10 mm suits younger students and whiteboard-sized layouts; 2 mm is “engineering lite” for dense work. In inches, 1/4 in is the classic US school spacing, 1/5 in matches the traditional engineering pad, and 1/8 in is for fine drafting.

The engineer 5×5 option draws every fifth line heavier — the heavy lines mark inches (at 0.2 in spacing) or 25 mm blocks (at 5 mm), so you count big units instead of small ones. Turn on axis labels to get ruler numbers along the edges.

Isometric

An isometric grid is a lattice of equilateral triangles — one family of vertical lines and two families at ±30°. It exists for one purpose: drawing three-dimensional objects without learning perspective. A cube drawn on iso paper takes six lines, all along grid directions, and comes out looking solid every time.

Who uses it: engineering students (the “iso view” is a drafting staple), game artists (isometric tile maps), industrial designers sketching forms quickly, and anyone who wants 3D doodles that don’t collapse. The isometric guide covers the actual technique.

Spacing: the number is the triangle’s side length. 10 mm is comfortable for sketching; 5 mm suits detailed work.

Dot grid

Dots instead of lines — the same square lattice, reduced to a point at each intersection. It guides handwriting and layout without boxing it in, which is why the bullet-journal world adopted it wholesale. Also good for UI wireframing and light lettering practice where full lines would fight the pen.

Spacing: 5 mm is the notebook standard (Leuchtturm1917, Rhodia dot pads). Choose medium or bold line weight — dots that are too faint disappear under a scanner.

Hexagonal

Hex grids tile the plane the way bees do. Uses: tabletop RPG maps (the classic ~1 in-across flat-top hex — a 15 mm side length here — fits standard miniatures), organic chemistry (benzene rings draw themselves), quilt planning, and wargame terrain. Flat-top hexes read like map tiles; pointy-top suits diagrams that flow left-to-right.

Spacing: the number is the hexagon’s side length, not its across size — a 10 mm side is 17.3 mm across flat-to-flat, and a 15 mm side is ~26 mm across, which is the ~1 in hex of the tabletop miniatures standard. For overland maps, 6–7 mm sides (about 10–12 mm across) pack more territory per page.

Polar

Concentric rings crossed by radial spokes from the centre. Polar paper plots anything that lives in angle-and-distance coordinates: antenna radiation patterns, radar-style charts, rose curves in math class, mandala and zentangle construction, embroidery layout.

Set the ring spacing in mm and the spoke count in degrees-divisions — 24 spokes gives 15° increments, 36 gives 10°. Every fifth ring prints heavier so you can read radius at a glance.

Logarithmic (semi-log and log-log)

Log paper rescales an axis so that each decade — 1 to 10, 10 to 100, 100 to 1000 — takes the same physical distance. Inside each decade, lines sit at log positions: 2, 3, 4 … 9 bunch toward the top of the decade.

• Semi-log = one log axis, one linear axis. For exponential data: population growth, compound interest, RC discharge curves, bacterial counts, decibels.
• Log-log = both axes logarithmic. For power laws (y = xᵏ plots as a straight line with slope k) and data spanning many orders of magnitude on both axes.

The decades control sets how many powers of ten fit on the axis — 3 decades spans 1–1000. The log paper guide has worked examples of choosing decades and reading slopes.

Lined

Plain ruled paper: horizontal lines at your spacing, nothing else. 7–8 mm matches college-ruled notebooks; 10–12 mm for early handwriting. The margin line option adds the vertical rule that turns a blank sheet into proper note paper.

Cornell

The Cornell layout divides the page into three zones: a cue column on the left (keywords, questions), the main notes area (ruled lines during the lecture), and a summary strip across the bottom (the two-sentence version you write after class). Developed at Cornell University in the 1950s and still the most-tested note structure there is — the review step is built into the paper.

Line spacing works the same as lined paper (7–8 mm typical). The cue column and summary strip size themselves to the page.

Calligraphy / lettering

Lettering guides are four-line groups: ascender line, waist (x-height top), baseline, and descender space — plus optional slant lines at a set angle from the baseline. Copperplate and Spencerian scripts live at 55°; italic sits around 5–10° from vertical; modern calligraphy ignores slant entirely (set it to 0).

The spacing number is the x-height — 4–6 mm for practice, 8–12 mm for posters or first drills. The lettering grid guide explains how to use the bands for drills.

Perspective (one-point)

A training wheel for drawing depth: a horizon line, a fan of lines radiating from a vanishing point, and horizontal depth lines that bunch toward the horizon at a realistic foreshortening ratio. Sketch boxes and buildings over it to feel how parallel lines converge; trace a few sheets and the intuition transfers to unguided drawing.

Set the vanishing point as a percent across the page and the horizon as a percent down — off-centre vanishing points make more interesting compositions.

Choosing in ten seconds

If you’re doing…	Grid	Start with
Math, plotting, general notes	Square	5 mm or 1/4 in
Technical drawing, 3D sketches	Isometric	10 mm side
Bullet journal, wireframes	Dots	5 mm, medium ink
RPG maps, chemistry, quilts	Hex	15 mm flat-top side (~1 in across; minis), 6–7 mm for overland
Polar plots, mandalas	Polar	5 mm rings, 24 spokes
Exponential or wide-range data	Log	Semi-log Y, 3 decades
Class notes you’ll review	Cornell	7.5 mm ruling
Handwriting, calligraphy drills	Calligraphy	5 mm x-height, 55° slant
Perspective practice	Perspective	VP 50%, horizon 38%

And when in doubt: print one of each. That’s the whole point of a generator — the pad costs a sheet of paper and thirty seconds.

Frequently asked questions

What is the most versatile graph paper?

5 mm square grid in light gray — fine enough for legible handwriting and accurate sketching, coarse enough to stay out of the way. It's the default on the generator for a reason. If you work in inches, 1/4 in is the equivalent workhorse.

Is dot grid or square grid better for bullet journaling?

Dot grid won the community vote years ago: it gives alignment guides for writing and drawing but vanishes under finished pages. Square grid is better when precision matters more than aesthetics — tables, pixel planning, math work. Try both at 5 mm and keep whichever your handwriting prefers.

What paper do engineers actually use?

Green-tinted computation pads ruled 5×5 per inch (five squares per inch, a heavier line each inch), often printed on the back so the grid shows faintly through. The engineering preset on this site reproduces that layout on plain paper.

What size hexagons for a D&D battle map?

The tabletop convention is a hex about 1 inch across — and this generator's spacing is the hexagon's SIDE length, so set 15 mm for ~26 mm across flat-to-flat; a standard 25 mm miniature base just fits. For world maps and overworld hex-crawls, 6–7 mm sides (about 10–12 mm across) fit more territory per page.

When should I use log paper instead of normal paper?

When your data multiplies rather than adds: exponential growth, power laws, anything spanning more than one order of magnitude. If doubling the x-value keeps meaning the same thing, use semi-log; if both axes span decades, log-log. The log paper guide walks through real examples.