How to print an A4 calendar on Letter paper
If you have an A4 calendar PDF and only Letter paper in the tray, don't shrink the A4 file to fit — download the Letter version and print it at 100%. Squeezing A4 onto Letter works, but it shrinks the grid and pushes it off-center, and a calendar is the one layout where that shows.
A4 and Letter are close, but not the same shape
They look interchangeable in a stack. They aren't.
| Size | Millimeters | Inches |
|---|---|---|
| A4 | 210 × 297 | 8.3 × 11.7 |
| Letter | 215.9 × 279.4 | 8.5 × 11 |
Letter is about 6 mm wider than A4 and about 18 mm shorter. So the two sheets disagree on both axes at once: one is wider, the other is taller. There is no scale factor that makes an A4 layout land squarely on a Letter sheet.
Fitting an A4 file loses about 6% and floats the grid
When you print the A4 file with "Fit to page" on, the printer scales the whole page down until the taller dimension fits. Height is the limit here: 279.4 divided by 297 is 0.94, so the layout comes out at roughly 94% — about a 6% shrink in every direction.
That handles the height. The width is the problem. The A4 content, now 94% of 210 mm, is about 197 mm wide, sitting on a 215.9 mm sheet. That leaves roughly 18 mm of extra width the layout never planned for, split as loose margin down each side. The grid ends up smaller than drawn and drifting toward one edge — the same silent rescaling that makes any printable come out wrong, just guaranteed here because the sizes genuinely differ.
The native Letter file skips the whole problem
The fix isn't a better scale percentage. It's the right file. We draw every calendar separately for A4, A5, and Letter — not one master scaled three ways — so the Letter file already uses the full 215.9 × 279.4 mm sheet with the margins and line weights set for it. Download it, print at 100% ("Actual size"), and there's nothing to correct.
This is the practical answer for most people asking the question: you're in the US or Canada with Letter paper, you found an A4 calendar, and the calendar you actually want exists in Letter already. Match the file to the paper in your tray and the scaling question disappears.
If you're stuck with the A4 file, set 94% by hand
Sometimes the A4 PDF is all you have. Then scale it deliberately instead of letting "Fit to page" guess:
- In the print dialog, set a custom scale of 94% rather than choosing "Fit" — you get the same shrink, but you know the number.
- Check "center on page" if it's offered, so the extra width splits evenly left and right instead of piling on one side.
- Print one page and look. If the outer grid lines have even margins and nothing is clipped, the other eleven months are safe.
It won't match a native Letter print — the grid is still 6% smaller with wider side margins — but a controlled 94% beats a fitted print you didn't measure.
Print the file that matches your paper
Cross-size printing is a workaround for a file that doesn't fit your printer. The cleaner path is to not create the mismatch: every calendar we make comes in A4, A5, and Letter, portrait and landscape, each drawn for its own sheet. Pick Letter if that's what your tray holds, print at 100%, and the grid comes out exactly as designed. $19 once, every size included.