Scale Percentage Calculator

Enter the original and target size to get the exact scale percentage to use in your design software or copier.

Scale X: 200.0% • Scale Y: 200.0%

How to calculate scale percentage

Scale % = target size ÷ original size × 100. Going from 100 mm to 200 mm is 200%. If the width and height percentages differ, the artwork would be distorted; use the smaller percentage to fit inside the target, or the larger to fill it and crop.

Frequently asked questions

How do I calculate the percentage to scale a drawing?

Divide the size you want by the current size and multiply by 100. To go from 8 inches to 12 inches, scale to 150%.

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