Print-ready ruler
Printable ruler. Ready for your next project.
Need a ruler away from your screen? Choose your paper size and download a vector PDF. Every file includes a physical-size check so you can catch printer scaling before you measure.
Illustration only — the preview is not actual size. The PDF contains the physical-size scale.
No sign-up. No camera or uploaded files. Print at 100% / Actual Size, not “Fit to page”.
All printable ruler files
These direct download links also work without JavaScript. Choose the file that matches the paper loaded in your printer.
How to print a ruler at actual size
- Download the matching A4 or US Letter PDF and open it in a PDF viewer.
- Select landscape orientation and the same paper size in the print settings.
- Set scaling to 100% or Actual Size. Disable “Fit”, “Shrink oversized pages”, and any custom scaling.
- Print once, then measure the labeled 100 mm line with a trusted physical ruler. It should be exactly 10 cm.
- If the check is wrong, adjust the print settings and print again. Cut outside the marks only after verifying the scale.
Why does my printed ruler look too small?
Printer drivers and browser print dialogs often shrink a page to its printable area. Even a small percentage change affects every measurement: a 5% reduction makes the 100 mm check line only 95 mm long. Using the PDF’s matching paper format avoids unexpected page-size conversions, but the printed check is still essential.
The bank-card rectangle provides an optional second check at 85.60 × 53.98 mm for a standard ID-1 card. Compare only the outline; you never need to photograph or enter the card’s details. A nonstandard card is not a reliable reference.
Which scale should I choose?
The metric printable ruler has a 25 cm span. Each small mark is 1 mm, medium marks indicate 5 mm, and numbered marks show whole centimeters. The inch printable ruler spans 10 inches and uses 1/16-inch divisions. For example, six small divisions equal 6/16 = 3/8 inch.
These lengths fit both supported landscape paper sizes with margins. A full 12-inch ruler cannot fit on a single A4 or US Letter sheet at actual size. We do not compress the scale or label a shorter printout as twelve physical inches.
When a paper ruler helps
Use a verified paper ruler for classroom exercises, paper crafts, checking a drawing, or a quick everyday length estimate. Keep it flat, align the object at the zero line rather than the cut paper edge, and read at eye level. Moisture, folds, stretched paper, and printer tolerances can change accuracy; recheck a ruler after laminating or prolonged use.
For manufacturing, medical, construction, or other safety-critical measurements, use an appropriate calibrated physical instrument. A printable ruler is not a certified measuring device.
Prefer to measure on your screen?
Use the centimeter ruler or fractional inch ruler for small objects that fit beside a screen edge. They need display calibration, while the paper ruler needs print-scale verification. Compare a known span with the actual-size screen check. See our guide to reading metric and fractional marks, or convert millimeters to inches when the units differ.