Paper size guide
A4 vs Letter Graph Paper: Which Printable Size Should You Use?
A4 and US Letter look similar, but graph paper is not forgiving. If the PDF size does not match the paper in your printer tray, the print dialog may shrink the grid and make the squares wrong.
Rule of thumb
Print the same paper size that is loaded in the printer.
A4 PDF for A4 paper. Letter PDF for Letter paper. Do not use Fit to Page when grid spacing matters.
A4
210 x 297 mm
Common in most countries outside the United States and Canada. Taller and slightly narrower than Letter.
US Letter
8.5 x 11 inches
Common in the United States and many North American classrooms. Wider and shorter than A4.
Why this matters more for graph paper than normal documents
If a text document is scaled by a few percent, most people never notice. If graph paper is scaled by a few percent, the physical grid spacing changes. A 5mm square might print as 4.8mm. A quarter-inch square might no longer line up with an inch ruler.
What happens when you print A4 on Letter
A4 is taller than Letter. When an A4 PDF is printed on Letter paper, the app often shrinks the page so the full height fits. That keeps the page from being clipped, but it also shrinks every grid square.
What happens when you print Letter on A4
Letter paper is wider than A4. When a Letter PDF is printed on A4 paper, the app may shrink the width or shift the page. This can make the grid smaller or move it away from the intended margins.
Which one should you download?
| Your printer paper | Download this | Print setting |
|---|---|---|
| A4 | A4 graph paper PDF | Actual Size / 100% |
| US Letter | Letter graph paper PDF | Actual Size / 100% |
| A3, Legal, Tabloid | Matching large-format PDF | Actual Size if supported |
What if you only have the wrong size?
If exact grid spacing does not matter, you can use Fit to Page. For sketching, note taking, or rough planning, that may be acceptable. For math, measurements, scale drawings, or printable worksheets, it is better to generate the correct paper size instead.