Ruler-online
ruler-online.net
Online Ruler - Actual Size Measurements in mm, cm, and inches
Online Ruler will help you to take actual size measurements of any object in mm, cm, and inches. Also, it's free and easy to use.
Printable Ruler
We provide all types of printable rulers in cm and inches in PDF format. Just download and print on paper to measure anything.
PPI Calculator
The PPI calculator determines the pixels per inch, dot pitch (DPI), and aspect ratio based on the screen resolution and diagonal.
Videos
Why is the ruler size wrong when I open it?
Browsers usually default to 96 PPI, which varies from your actual screen density. To fix this, click the 'Calibrate Ruler' button and use a standard credit card to set the correct scale.
codeshack.io
codeshack.io › online-ruler
Online Ruler - Actual Size on Screen (CM, MM, Inch)
What is the standard size of a credit card?
A standard credit card (ISO/IEC 7810 ID-1) is exactly 85.60 mm or 3.37 inches wide. This consistent size makes it the perfect tool for calibrating digital rulers.
codeshack.io
codeshack.io › online-ruler
Online Ruler - Actual Size on Screen (CM, MM, Inch)
Is it safe to place objects on my screen?
Yes, most modern screens are durable. However, avoid pressing hard or using objects with sharp edges that could scratch the measuring surface.
codeshack.io
codeshack.io › online-ruler
Online Ruler - Actual Size on Screen (CM, MM, Inch)
Ginifab
ginifab.com › feeds › cm_to_inch › actual_size_ruler.html
Actual Size Online Ruler (mm,cm,inches) - Screen Measurements
The width of a standard credit card is 85.60 mm (3 3/8 inches). Take out your credit card, click the button to start comparing lengths and calibrating. Start calibration · In calibration mode, click the (+/-) button, or simply drag the ruler left and right, take out your credit card for comparison, make the 3 3/8 inches mark match the width of your credit card, then save and refresh. This online ruler is free to use, and we want to provide a better native language environment, make it more natural and easier for everyone to use, if you are willing to offer a better description in your native language, benefit your fellow countrymen, please visit this translation page(click).
Rapidruler
rapidruler.com
Free Online Ruler – Measure in mm, cm & inches at Actual Size
Use our Actual Size Online Ruler to measure objects in mm, cm, and inches with real-world precision. No downloads. Works on any screen.
RapidTables
rapidtables.com › tools › ruler-cm.html
Ruler cm/mm online, actual size 📏
Ruler cm/mm - length meter online
Rlvnt
rlvnt.life › wp-content › uploads › 2022 › 08 › RLVNT-PD-ruler-1.pdf pdf
Printable Millimeter Ruler If your credit card fits in this box,
Print this ruler at “Actual Size.” Anything less than ·
Onlineruler
onlineruler.io
Online Ruler - Free online ruler! Actual-size ruler app for desktop or phone
A free online ruler tool that works on any device, and automatically scales based on your screen size and DPI. Measure with confidence for free, anytime, anywhere!
Kmhpromo
kmhpromo.com › online_ruler_actual_size
Online Ruler Actual Size - mm,cm,inch
If you need a accurate online ruler which based on the standard of the metric ruler or a PDF Online Ruler Download Our ruler combine online millimeter ruler with online ruler inches,And your can find the not only decimal but also fraction for online ruler cm(or millimeter ruler) .if you need to adjusted to an actual size or need to find a online ruler to scale..We strongly advice that you can set the pixel first so you will have a more accurate measuring ruler online...The most important is that it is free online ruler
Anruler
anruler.com
Online Ruler (cm/mm, inches) – Measure in Actual Size
Free online ruler for accurate measuring in inches, centimeters, and millimeters. Use our real size digital ruler on any phone, tablet, or computer.
101 Planners
101planners.com › home › paper and clip art › printable ruler | online ruler
Printable Ruler | Online Ruler
July 30, 2025 - 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).
Online Ruler
ruler.onl
Online Ruler in Actual Size (inches, cm/mm) — measure something!
Its standard width is 3.37 inches (3 3⁄8 inches), or 85.6 mm (8 centimeters, 56 millimeters) for the metric measurement. For your convenience, the corresponding sign is plotted under the scale of the ruler. Change the diagonal value in the input field until the edge of the plastic card attached (oriented horizontally) to the screen coincides with the black stroke to the left of the icon. Using this method in addition to the first method will allow you · to determine the size of the display diagonal.
Printablerulers
printablerulers.net › category › metric
Metric Rulers
Click any Printable Ruler to see a larger version and download it. ... Copyright © 2015-2025 by Savetz Publishing, Inc. Contact us. Privacy Policy. Subscribe to the Free Printable newsletter.
Ursupplier
ursupplier.com › tools › measurement › online_real_size_scale_ruler.html
Online Real Size Ruler (mm, cm, inch)
MM to CM : convert millimeters(mm) to centimeters(cm), or centimeters to millimeters. Feet to CM : convert feet(ft) to centimeters(cm), or centimeters to feet. Height conversion : convert feet and inches to centimeters, convert cm to ft and in. Scale converter : calculate the actual length and the scale length according to the scale ratio. Welcome to share this online ruler to your freineds, if you do like it.
Printablerulers
printablerulers.net
Printable Rulers
These free Printable Rulers are easy to print. Each is available in PDF format: just download one, open it in a PDF reader, and print. Please make sure you are printing at 100% or actual size so the rulers will stay true to size.
Bolt Depot
boltdepot.com › fastener-information › printable-tools › Ruler.pdf pdf
US and Metric Ruler
Make sure to print this chart to Actual Size (no scaling). After printing, check the ruler (e.g.