Printable ruler

Print an actual-size ruler for quick measuring and scale checks.

Choose an inch or centimeter ruler, preview the exact-size SVG, then download PDF, PNG, or SVG. Each page includes a matching inch or metric calibration mark so you can confirm printer scaling.

Live ruler generator

Choose a ruler format

Use Letter portrait for compact rulers or Legal landscape when you need a full 12-inch or long centimeter ruler.

Ruler essentials

Choose the ruler, confirm the required paper size, print at 100%, and verify the calibration mark before measuring.

Printable ruler presets

Scale check

1 in

Calibration square: 1 inch x 1 inch

Print scale

100%

Actual Size, not Fit to Page

Paper match

Letter portrait (8.5 × 11 in)

Match this in the print dialog

Print at actual size. Set the PDF dialog to 100% scale and avoid Fit to Page.

Verify the calibration square. Measure the printed calibration mark before using the ruler for important work.

Active ruler

6 Inch Printable Ruler

Compact true-size inch ruler that fits any Letter printer setup.

Built for true-size paper checks

Printer calibration when graph paper, handwriting guides, or music staff spacing must stay exact.
Classroom measuring activities when students need a quick inch or centimeter reference.
Craft, cutting, layout, and binder setup checks before committing to a full print run.

Print the ruler accurately

Choose Actual Size or 100% scale in the print dialog.
Match the selected page size, especially Legal landscape for the 12 inch and 28 cm rulers.
Measure the printed calibration mark before using the ruler for important work.

Use the ruler with graph paper, number lines, index cards, and AI-generated worksheets when exact print size matters.

View all printables →Graph and math Classroom worksheets

Graph & mathGraph Paper GeneratorChoose metric, inch, coordinate, engineering, and specialty grid paper.Graph & mathNumber Line PrintableCreate labeled, blank, 0 to 100, or fraction number lines with PDF export.ClassroomIndex Card TemplatePrint 3x5, ruled 3x5, or 4x6 cards for flashcards, recipes, filing, and prompts.ClassroomAI Worksheet Generator for TeachersTurn lesson text into printable worksheets, quizzes, and answer keys.

FAQ

How do I print the ruler at actual size?

Download the PDF, set scaling to Actual Size or 100%, and avoid Fit to Page. Then measure the printed calibration mark.

Why does the 12 inch ruler use Legal landscape paper?

A full 12 inch ruler does not fit across Letter paper at true size with readable margins, so this preset uses Legal landscape.

Does the centimeter ruler include millimeter marks?

Yes. The centimeter presets include millimeter ticks with stronger marks at every centimeter.