Free printable ruler to print at actual size or online ruler to use without printing.
To use the online ruler: ensure the page is the actual size, place a piece of paper on the screen and adjust the size until the image is the size of the page. To adjust the screen size click on control and scroll with your mouse. Once your screen is the right size then you can use the ruler online. There are two paper sizes below (A4 and 8.5″x11″) so make sure that you choose the correct file for the paper you use.
Printable Ruler
Our free printable ruler (actual size) comes is available in mm, cm, and inches. A ruler printable is useful to put in your planner or for other uses, such as sewing projects when you need to pin on the ruler. The actual size printable ruler must be printed on either A4 or US Letter paper (according to the paper size you choose). This is important to ensure that the print out ruler is accurate.
You can print ruler templates on any color paper to create a colored ruler. For a printable metric ruler, choose the centimeter or the millimeter ruler printable.
Printable Ruler Inches
For a metric printable ruler see below.
One 8″ ruler
These printable rulers are in inches and centimeters.
Printable Centimeter Ruler
This actual size printable ruler cm is for those who follow the metric system.
There are four rulers on this page:
- 25 cm and 10 inches
- 23 cm and 9 inches
- 20 cm and 8 inches
- 18 cm and 7 inches
Printable MM Ruler
This mm ruler printable shows measurements in millimeters. You can create a printable millimeter ruler from the cm ruler printable above, but you count the shorter lines only (not the longer cm lines).
Printable Ruler for Kids
A printable paper ruler is useful when you teach kids measurements. They can draw on the ruler, which will help them understand how to use it and how to read the measurement.
How to make the printable ruler
- Download the printable ruler PDF or image file.
- Set your printer’s page size to letter or A4 depending on the ruler template you downloaded.
- Set page scaling to “none”. The printer setup is important to ensure that your paper ruler is accurate.
- Print on standard paper for one-time use or on card stock if you want your ruler to last longer.
- You can laminate printable paper rulers if you want them to last for a long time or if you want to write on them with wipe-off markers.
- When you have printed your ruler, take a store-bought ruler or a tape measure to check the accuracy. If it isn’t accurate then you need to change your printer’s settings.
Online Ruler
This is a ruler for online use. Since screen sizes differ, you need to adjust the size to ensure that the ruler measurements are accurate. To get an accurate real-size ruler, open the file below and set the zoom to “actual size”.
To ensure the page is the actual size, place a piece of paper on the screen and adjust the size until the image is the size of the page. To adjust the screen size click on control and scroll with your mouse. Once your screen is the right size then you can use the ruler online. There are two paper sizes below (A4 and 8.5″x11″) so make sure that you choose the correct file for the paper you use.
For the online ruler to measure items accurately, it’s essential to calibrate it against a physical object. Here’s how to ensure the online ruler on your screen is set to true size:
- Choose a Standard Paper Size: Take a standard piece of paper, which you know the dimensions of (such as an A4 sheet, which is 210mm by 297mm).
- Place the Paper Against the Screen: Hold the paper up against your computer screen.
- Adjust the Ruler’s Scale: Compare the paper to the ruler displayed on the screen. Adjust the scale of the ruler through the website’s settings until the measurements shown match the actual size of the paper. Most sites will allow you to drag a slider or enter a specific percentage to scale the ruler up or down.
- Verify the Accuracy: Check both the length and width measurements with different parts of the paper to ensure the ruler’s scale is accurate throughout.
By following these steps, the online ruler will reflect actual sizes, making it a reliable tool for measuring objects placed against the screen.
Online Ruler Inches
You can use any of the following inch rulers online by using the technique described above to ensure that the ruler is viewed at the actual size. Take note of the paper size.
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