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Scale Calculator See also: Measure at Scale From Image and Printable Scale Rulers

Calculate Scale
Scaled Length
Actual Length



Take a measurement from plan or on-screen image and enter it and the actual length it represents to calculate the scale. For an on-screen image, measure the known dimension of an object in the image (eg: a wheel diameter)





Measure at Scale
Measured Length
Scale 1 :

Measured Length
Measure at Scale From On-screen Image
Use a full scale ruler to measure a known measurement from an image on-screen. In the Calculate Scale dialog, enter this measurement into Measured Length and the actual full scale measurement into Full Scale Length. Hit Calculate Scale to calculate the scale. Enter the scale into the lower Measure at Scale dialog. Now, measure any length from screen image or plan, enter into Measured Length and hit Calculate to calculate the actual full scale length.
Inch Fraction To Decimal Inch =

If scaling from an on-screen image, you can enlarge the image on the screen for more accurate measurements.
Hold down the CTRL key and hit + to enlarge, - to decrease size and 0 to re-set to 100% (normal).


Scaling Inch Fractions
If you're working at a small scale, and the calculators don't go small enough, you can scale up the measurements for the calculator inputs, then scale down the results. This is easy with Metric, where you can scale up by multiplying input dimensions by 10, enter into the calculator then scale the results back down by dividing by 10. With Inch Fractions it's a bit more difficult to scale. Use this calculator to scale your Inch dimensions with Fractions up and down.

Scale : 1 Actual







DON'T BREATH THE DUST If you're cutting blocks, concrete, stone or ANYTHING and there's DUST - DON'T TAKE THE RISK
Don't cut it, or cut it wet so there's NO DUST - Silicosis Sucks
And if you're cutting wet, wear a mask - theres dust in the spray too!

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Results


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Create PDF to print diagrams on this page. Help & Settings Printing Help (new window)

Copy all diagrams on this page to bottom of page - Make multiple copies to Print or Compare.

View page on Phone via QR Code (Not current calculation result)

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Zoom out to fit large full scale template images on screen - or to adjust scale to match ruler held against screen
Zoom 100%


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Click Slider to select then use keyboard cursor keys to fine tune.
Keyboard
Fine tune Sliders

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Create Full Scale PDF with diagrams on this page to print (templates)

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Copy all diagrams on this page to bottom of page - Make multiple copies to Print or Compare Results



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All calculators on this site are geometric only.
Check relevant local regulations for appropriate sizes, spacings and all engineering requirements.


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