Converting from Point Didot (dd) to Character X (X) | Typography

What is Point Didot (dd)

Point Didot (dd) is a unit of measurement used in typography to specify the size of typefaces. It is primarily used in European countries and is named after the French printer and typeface designer Firmin Didot.

What is Character X (X)

Character X (X) is another unit of measurement in typography that is commonly used in digital design and typesetting. It is a versatile unit that allows for precise control over the size and spacing of characters on a digital screen.

Conversion Formulas

The default conversion between Point Didot (dd) and Character X (X) is as follows:

• 1 (dd) = 0.1776094 (X)
• 1 (X) = 5.630331 (dd)

For other conversions, you can use the following formulas:

• 7 (dd) = 1.243266 (X)
• 7 (X) = 39.41232 (dd)
• 8 (dd) = 1.420876 (X)
• 8 (X) = 45.04265 (dd)
• 4 (dd) = 0.7104378 (X)
• 4 (X) = 22.52132 (dd)

Examples

• Converting 7 Point Didot (dd) to Character X (X):

  • 7×0.1776094=1.243266 X

• Converting 4 Character X (X) to Point Didot (dd):

  • 4×22.52132=90.08528 dd

In typography, understanding the relationship between Point Didot (dd) and Character X (X) is essential for designing layouts and choosing appropriate type sizes. Use this page as a reference for converting between these two units effortlessly.