Converting from Pica Postscript (pi) to Point Didot (dd) | Typography

What is Pica Postscript (pi)

Pica Postscript (pi) is a unit of measurement used in typography, equivalent to 1/12 of a Postscript point. It is commonly used in typesetting to define the size of letters, lines, and other elements on a page.

What is Point Didot (dd)

Point Didot (dd) is another unit of measurement in typography, named after the French engraver and printer, Firmin Didot. It is commonly used to specify font sizes and spacing in printing and digital design.

Conversion Formulas

To convert from Pica Postscript (pi) to Point Didot (dd), you can use the following formula:

dd=pi×11.26066

To convert from Point Didot (dd) to Pica Postscript (pi), the formula is:

pi=dd×0.08880472

Examples

• 9 (pi) = 101.346 (dd)
• 9 (dd) = 0.7992425 (pi)
• 14 (pi) = 157.6493 (dd)
• 14 (dd) = 1.243266 (pi)
• 3 (pi) = 33.78199 (dd)
• 3 (dd) = 0.2664142 (pi)

Use this information to perform conversions between Pica Postscript (pi) and Point Didot (dd) in your typography projects.