Imperial Scale Ruler

Variable Scale Ruler

This is an online scale ruler that could be calibrated to actual size and the scale ratio is variable that could be set by yourself, you can set the scale ratio according to your needs, eg. 1:4, 1:8, 1:12, 1:16, 1:24, 1:32, 1:48, 1:64, 1:96, 1:128 ...etc. scale with imperial units, inches(in), feet(ft), yards(yd) and miles(mi). In order to let get you the most accurate measurement the length, we strongly recommend that you calibrate the ruler first, set the pixels per inch to your own device. If this ruler is useful to you, maybe your friends need it too, welcome to share it.

How to use this imperial scale ruler ?

• Calibrate the ruler to actual size
• Set the scale ratio, for example "1:12"
• Black number is inches(in), blue number is feet(ft), green number is yards(yd), red orange number is miles(mi)
• Click on ruler will show a corresponding vertical line

How to adjusting this scale ruler to actual size

1. My laptop has a wide screen (13.6"x7.6"), and resolution is 1366x768 pixels, 1366 / 13.6 = 100.44 PPI. Screen resolution of current device is pixels.
2. Search "display by pixel density" online, check if there has your device's brand and model, i am lucky and found my screen has 100 PPI.
3. Use standard objects to compare lengths, check your wallet, use any paper money to be our compare object, then search "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 object, the longer the more accurate.
4. 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 30cm, so i adjust the default pixels per inch(PPI) to 100.7, now i get an online actual size ruler.
5. Each device has it's own PPI, eg. my laptop is 100.7 PPI, my mobile phones (Sony Xperia C5, OPPO R11 Plus) are both 122.6 PPI, Xiaomi Mi Pad 3 is 163 PPI. sorry, I don't have an iPhone to test for you, too expensive to me 😛

Dragging ruler adjuster left or right to fit the size of your reference object, remember to save the setting for next time, after save the setting, refresh your brower to check the result. On the most popular browsers you can press the F5 key or click on the refresh button.

Scale Conversion Calculator

If you would like calculate the scale length or real length, we have a scale conversion calculator, it can help you quickly and easily calculate the scale length, welcome to try it.

What do you think about this virtual scale ruler ?

Try the scale ruler on your smartphone

Online Virtual Rulers

• online real size ruler : It's a good idea to check the products size, before we buying it from internet, try this virtual actural size ruler
• imperial scale ruler : Online scale ruler with imperial units(in, ft, yd, mi)
• metric scale ruler : Online scale ruler with metric units(cm, m, km)

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Length Converters

• Inches to centimeters : convert inches(in) to centimeters(cm), or centimeters to inches.
• Inches to feet : convert inches(in) to feet(ft), or feet to inches.
• Millimeters to centimeters : convert millimeters(mm) to centimeters(cm), or centimeters to millimeters.
• 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.

How to use the scale ruler

A scale ruler a tool for measuring distances and transferring measurements at a fixed ratio of length; eg. architect's scale or engineer's scale.

An Architect's or scale ruler is designed for use in determining the actual dimensions of a distance on a scaled drawing. Most architectural, construction and engineering drawings and blueprints are scaled to allow for large areas, structures or items to conveniently fit on a reasonable size of paper.

Our virtual scale ruler has variable ratio, it could be set the ratio by yourself, eg. 1:4 (3"=1'-0"), 1:8 (1 1⁄2"=1'-0"), 1:12 (1"=1'-0"), 1:16 (3⁄4"=1'-0"), 1:24 (1⁄2"=1'-0"), 1:32 (3⁄8"=1'-0"), 1:48 (1⁄4"=1'-0"), 1:64 (3⁄16"=1'-0"), 1:96 (1⁄8"=1'-0"), 1:128 (3⁄32"=1'-0")... The upper half of this scale ruler is the actual length; the lower half is the length calculated by the ratio.