How to use it
- Choose “Target size” or “Percentage”.
- Enter the original length of the dimension you care about and the size you want (or the percentage).
- Enter another dimension of the original to see how it changes.
How it works
Scale = new size ÷ original size. Every length is multiplied by the scale; area by the scale squared.
Worked example
A 10 cm motif that must be 12 cm: 12 ÷ 10 = 120%. A 15 cm edge becomes 18 cm, and the area is 1.44 times larger.
Tips
- Large enlargements are often done in steps or on a plotter, since copiers have limits.
- Check the result against the scale square or ruler printed on the pattern.