Handy & Accurate Online Ruler

This is a convenient online ruler that could be calibrated to lớn actual size, measurements in cm, milimet & inch,the upper half is the millimeter ruler and centimeter ruler, the lower half is an inch ruler. In order lớn accurately measure the length of your sản phẩm, we strongly recommkết thúc that you calibrate this online ruler first,set the correct pixels per inch khổng lồ your own device,after adjustment, you will have the most precise ruler online.

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To have the most accurate ruler online, just phối the pixels per inch(PPI),below are some ways to lớn know the pixels per inch to lớn your device.
My máy tính xách tay has a wide screen (13.6"x7.6"), and resolution is 1366x768 pixels, 1366 / 13.6 = 100.44 PPI. The screen resolution of your current device is pixels. Search "display by px density" online, kiểm tra if there has your device"s brvà và model, i am lucky and found my screen has 100 PPI.Use standard objects to lớn compare lengths, kiểm tra your wallet, use any paper money to be our compare object, then tìm kiếm "the width of your paper money" online, when you know the width, you can adjust the ruler"s PPI setting by it,you can compare to any standard form size object at your side, e.g., coin, credit thẻ, CD, paper money, điện thoại phone, in the office, a A4 size printable paper is a good comparison object,the longer the more accurate.Below ruler adjuster help us lớn calibrate accuracy more easily.The most accurate way, after i measure the size of virtual ruler by an actual ruler,i found the markings are not very accurate at 30centimet,so i adjust the mặc định pixels per inch(PPI) to 100.7, now i have the most accurate virtual ruler on the website.Each device has it"s own PPI, eg. my Hãng Asus máy tính is 100.7 PPI,Apple MacBook Air is 127.7 PPI, Xiaongươi Mi Pad 3 is 163 PPI, my sản phẩm điện thoại phones (Sony Xperia C5, Điện thoại Oppo R11 Plus) are both 122.6 PPI, Apple iPhone 5 is 163 PPI, iPhone 7 is 162 PPI, iPhone X is 151.7 PPI.

Save the pixels per inch (PPI) according your own device, then you can use this ruler next time.Pixels per inch : , show ruler adjuster

Compare Ruler with Credit Card


Dragging ruler adjuster left or right lớn fit the kích cỡ of your reference object, rethành viên to save the setting for the next time you use it, after save sầu the setting, refresh your brower khổng lồ check the result.On the most popular browsers you can press the F5 key or cliông chồng on the refresh button.

Translate inlớn your native language

We hope to lớn provide a more user-friendly experience,are you willing lớn offer a native sầu language version for your country ? We are looking for volunteer khổng lồ improve the nội dung in your native sầu language, if you are interested khổng lồ help this, please visit this translation page.Below are some other language version.

The story of our ruler

One day, i took my máy tính computer khổng lồ work in the coffee cửa hàng, just had a project on h&, and i had lớn tell the customer the actual form size of a sản phẩm.Just lượt thích usual, i didn"t carry a ruler with me, so i connected khổng lồ the internet & tried to find an online virtual ruler to measure my product.

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Unfortunately, after i tried the virtual online rulers on the Internet, i found a problem that these existing online rules are not very accurate. If i just want khổng lồ know what the approximate length is, that"s fine, but what i need is a more precise length so that i can apply it to my daily work.

So later, we developed an online ruler by ourselves.It not only improves the accuracy of the measurement, but also has a scale of inches and centimeters so that it can be used in our work.

If you are lượt thích us, you need a precise online ruler lớn measure the hàng hóa kích cỡ, i believe this online virtual ruler can also meet your needs.

Command function

I am very happy that many people like our online ruler,also i am very excited lớn đánh giá all the comments from all the visitors. Regarding the joke about comments or commands here, i decided to lớn add a new "command" function(on the page top) for our dear friends, I try khổng lồ make the AI interaction smarter, hope you lượt thích our new commvà function 😛,welcome to try it và nói qua it, let me know your idea.

commvà examples : show 12 mm, show 2.3 cm, show me 5 2/3 in,show me 6 inches,show me how long 1 inch is,show 1 ft ...etc.

What bởi vì you think about this online ruler ?

Tell me what are you measuring? Does this online ruler help you?

Length Unit Converters

How khổng lồ use a ruler

This ruler measure in two different units of length, inches on one side (English ruler) và centimeters on the other side (metric ruler). A metric ruler is use khổng lồ measure centimeter(cm) & millimeter(mm), the centimeter is a unit of length in the International System of Units; An English ruler provides incremental measurements in inches, with each inch further divided inkhổng lồ smaller fractions.

Read an English ruler using fractions of an inch. The distance between any two large numbered lines is 1 inch. The large unnumbered line that is halfway between them is 1/2 inch. The smaller (but still prominent) line between the 1/2 mark và the numbered inch line is 1/4 inch. The tiny little lines between all of the more prominent lines are 1/16 inch.

Observe sầu the much simpler metric rulers. The distance between any two large numbered lines is 1 centimet, a metric ruler features two types of lines. The largest mark centimeters, or centimet. The smallest lines mark millimeters, or milimet.The prominent line between any two numbered lines is một nửa cm. The small lines between the 1/2 mark và the numbered centimeter mark are 1/10 cm, otherwise known as a millimeter, keep in mind that there are 10 mm to 1 centimet. The measurements are decimalized & there are no fractions.

Record distances by the name of the line that it most closely matches. If the length of an object goes to lớn one mark past the halfway mark on your ruler then it will be 9/16 inch on an English ruler or 6/10 centimet (or 6 mm) on a metric ruler.