What is a Printable Ruler?
A printable ruler is a PDF designed to print at exact real-world size on a standard A4 sheet. Once printed and cut out, it works just like a physical ruler — no device calibration needed.
Print a real-size ruler on A4
Choose your unit and orientation, then download a PDF to print on a standard A4 sheet. Set your printer to 100% scale ("Actual size", no "Fit to page") and you get an exact 1:1 ruler.
Preview · A4 portrait (210 × 297 mm)
Unit
Orientation
Print tip:
In your print dialog, set Scale to 100% (or "Actual size") and turn off Fit to page — otherwise the ruler prints smaller than real size.
How to Print at True Size
- Click the Download PDF button above.
- Open the PDF in your default viewer (Preview, Acrobat, Edge, Chrome, etc.).
- In the print dialog, set Scale to 100% (or "Actual size") and disable "Fit to page" / "Shrink to fit".
- Print, cut along the ruler border, and verify with a coin or bank card.
What's in the PDF?
Each A4 page contains several parallel ruler strips spanning the full usable width. In portrait you get four rulers per page; in landscape, three longer rulers. Each strip has a 1:1 scale with major, minor and fine tick marks, plus numeric labels at every major unit.
How to Verify the Print
A standard credit/debit card is 85.60 × 53.98 mm (ISO 7810 ID-1). A one-euro coin is 23.25 mm across. A US quarter is 24.26 mm. Lay any of these on the printed ruler — if they line up with the expected mark, the print is true-size.