Updated: Oct 3, 2022
The size of each size is calcutated by its biggest side (by width or by height) from one edge to another. For example, the height of Unicorn cutter is 4", width - 3", so the size will be 4" (by height).
You can always contact me if you have any questions about the sizes or you're not sure what size works better for you:)
The overall size of the cutter depens on its shape. Please consider it when you choose the size. And again, you can always contact me if you have any doubts on how the cutters will look comparing by each other. I'm always happy to help!:)
See how some cutters of the same size but of different shapes look comparing to each other on the image above.