Free online grid maker for artists

The grid method, and why it works

When you copy a photograph freehand, your brain keeps substituting what it knows for what it sees. You draw the eye you remember instead of the shape actually sitting on the paper, and the likeness slips away before you have finished the second eye. A grid stops that. It cuts the picture into small squares, and inside a single square there is no face, no horse, no cathedral — only a curve entering at one edge and leaving at another. Shapes that small are easy to judge, and if every square is right, the whole drawing is right.

The method is centuries old. Renaissance workshops used a gridded frame called a velo to transfer studies to panel, sign painters used it to scale lettering, and animation studios used it long before projectors were cheap. It is still the most reliable way to move an image from a small reference onto a big surface, whether that surface is A4 cartridge paper or a shop wall.

It is also a training tool rather than a crutch. Most people who grid their references for a few months find their freehand proportions improve, because they have spent that time looking at edges and angles instead of naming objects.

Using the grid maker, step by step

1. Add your reference. Drag a photo onto the grid maker canvas, click Choose image, or paste one straight from your clipboard with Ctrl + V. Nothing is uploaded — the picture is read by your own browser.
2. Set rows and columns. Drag the sliders or type an exact number. Turn on Keep cells square and the rows adjust themselves to your photo, so a square on screen is a square on paper.
3. Make the lines readable. Black works on pale photos, white on dark ones. Drop the opacity to around 35–50% so the grid guides you without hiding detail, and leave the cell labels on so you never lose your place.
4. Add an effect if it helps. Line art or sketch turns a busy photo into the edges you will actually be drawing.
5. Download and print. PNG keeps the lines crisp; JPG gives a smaller file. Export at 2× or 4× if you are printing bigger than A4.
6. Rule the same grid on your paper. Same number of rows and columns, bigger squares. Use a light 2H pencil so the lines erase cleanly later.
7. Work one square at a time. Start where a strong line crosses an edge, draw only what falls inside that cell, then check it against its neighbours before moving on.

Read the full step-by-step guide, including how to fix common mistakes ›

How many squares do you actually need?

More squares means more accuracy and more time. Fewer squares means faster work and more of your own hand in the result. Start from the subject, not the paper size.

If you are unsure, a good rule is that the smallest feature you care about — an eye, a window, a paw — should sit inside roughly one to two cells. Any smaller and you are copying noise; any larger and you are back to guessing.

More on choosing a grid size for your subject ›

The image effects, explained

Effects change how the photo is rendered under the grid, and whatever you see is what gets downloaded.

• Original — the photo untouched. Best when you are painting and need the colour information.
• Sketch — a pencil-rendering pass that keeps soft shading. Useful for seeing where tone changes gradually, like across a cheek.
• Line art — the sketch pushed to clean black strokes on white. This is the one to print if you want an outline to follow, and it uses far less ink.
• B&W — strips colour so you can read values. Colours that look different often share the same darkness, and that is what ruins a pencil drawing.
• Vintage — a warm sepia treatment with a soft vignette, for sanguine or toned-paper studies.
• Edges — detects the boundaries in the photo and shows them as bright lines on black. Good for finding the contours that matter before you commit. Switch the line colour to white so your grid stays visible on top.

From the screen to your paper

The grid only transfers correctly if the proportions match. Two things keep that true.

Use the same number of cells, not the same cell size

If the download is 20 columns wide, your paper needs 20 columns too — whatever size they end up being. To find your cell size, divide the width of your drawing area by the number of columns. A 30 cm wide sheet with 20 columns gives 1.5 cm squares. Mark those along the top and bottom edges, join them with a ruler, then repeat for the rows.

Common paper sizes and their cell maths

A4 is 21 × 29.7 cm, so a 20-column grid across the short edge gives you 10.5 mm squares. Chart paper at roughly 56 × 71 cm takes 14 columns at 4 cm a square, which is a comfortable size to rule with a long ruler. A half-imperial sheet at 38 × 56 cm sits neatly at 19 columns of 2 cm. Pick the column count that gives you a round number and the ruling takes minutes instead of an hour.

Match the shape of the paper to the shape of the photo

A photo that is 3:2 will not fill a square sheet without stretching. Either crop the photo before you load it, or accept a margin on your paper and rule the grid inside that area rather than edge to edge.

Or let the grid maker do the measuring

Pick a sheet format — A4, A3, A5, Letter, Legal or a custom size in millimetres — and the download becomes a real print-ready page rather than a bare image. Your photo is centred on the sheet inside the margin you set, and the readout tells you exactly how many millimetres each square measures, so you can rule an identical grid on your drawing paper with a ruler and no arithmetic. Print it at 100% rather than “fit to page” or the sizes will not match.

With no photo loaded, a sheet format gives you a plain numbered grid that fills the page — handy when you want to draw the grid on paper first and work from a reference on screen.

For very large work, transfer in stages: grid the photo at 8 columns, block in the big masses on the wall or canvas, then re-grid a single region at 16 columns to refine a face or a sign.

Full guide to scaling a reference onto paper, canvas or a wall ›

Habits that lift a gridded drawing

• Draw your paper grid lightly enough to erase, and number the cells in the margin only — not across the drawing area.
• Work on the shapes of the gaps as much as the subject. Negative space is easier to judge inside a small square.
• Note where each line enters and leaves a cell before you draw the curve between them. Entry and exit points are what hold the drawing together.
• Skip around. Finishing one corner completely before starting the next lets small errors accumulate in one direction.
• Check every few cells by stepping back. Accuracy inside squares does not guarantee the whole thing reads well.
• Erase the grid earlier than feels comfortable, then finish the drawing by eye. That last stage is where it stops looking like a copy.

Twelve habits for more accurate gridded drawings ›

Questions people ask

See all frequently asked questions ›