Points (pt) to mm
A point is one seventy-second of an inch, about 0.3528 mm. Font sizes, margins and rule weights are all specified in points; 12 pt is roughly 4.2 mm.
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Common values
Formula
mm = pt × 0.3527777778
A 12 pt font is not 4.2 mm tall. The point size measures the box the letters sit in, and the letters themselves are smaller.
Frequently asked questions
Q. How many mm is 1 pt?
1 pt is 0.353 mm, and 10 pt is 3.528 mm. Type any value in the box above to convert instantly.
Q. And how many pt is 1 mm?
1 mm is 2.835 pt. This converter works both ways, so typing in the right box updates the left one.
Q. Where is this unit used?
A 12 pt font is not 4.2 mm tall. The point size measures the box the letters sit in, and the letters themselves are smaller.
Other converters
Traditional units (geun, doe, majigi and so on) vary by region and product.