Typography Unit Converter

Convert typography measurements between points, didot points, ciceros, picas, agate lines, pixels, millimetres, centimetres, and inches.

Typography

Typography unit converter

Convert between print-first typography units and screen measurements using the standard 72 pt per inch baseline and the CSS 96 px per inch reference.

Value (pt)

Common contexts

Point baseline

Points, picas, didot units, and physical measures translate through a 72 pt per inch baseline. Pixels are anchored to the CSS 96 px per inch reference used by modern screen layouts.

Result

12 pt

12 pt equals 12 pt, 0.1667 in, and 4.2333 mm.

Source unit: 12 pt
Pixels: 16 px
Physical size: 0.1667 in

Traditional

Point (pt) 12

Didot Point (dd) 11.2597

Cicero (cc) 0.9383

Pica (pc) 1

Agate Line (ag) 2.1818

Digital

Pixel (px) 16

Metric

Millimeter (mm) 4.2333

Centimeter (cm) 0.4233

Inch (in) 0.1667

Typesetting note

Didot units and ciceros are common in European print work, while agate lines appear in newspaper layouts. Keeping the units together in one sheet makes it easier to compare type specs without switching tools.

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Type Measurement

Typography unit converter: points, picas, didot units, agate lines, and screen equivalents explained

A typography unit converter bridges the measurement systems used by editorial design, traditional typesetting, and modern screen layout. That matters when one spec calls for points or picas, another uses didot points or ciceros, and the implementation team still needs millimetres, inches, or CSS-style pixels for the same physical measurement.

Why typography units still vary

Points and picas remain common in English-language print and layout work, while didot points and ciceros appear in European traditions. Agate lines survive in newspaper and tabular settings, and pixels still show up when a print measurement needs a screen-side approximation.

All of these units can describe the same underlying size. The challenge is remembering the relationships quickly enough to move between editorial, production, and front-end conversations without introducing scale errors.

The base relationships behind the conversion sheet

Most digital typography planning still anchors to 72 points per inch. That gives you a clean bridge between physical length and typographic sizing. Pixels then enter the picture through the common CSS reference of 96 pixels per inch, which is useful for screen approximation rather than as a universal physical truth.

Didot-based units follow a different historical standard, so their relationship to points is close but not identical. That is why a converter is useful even for experienced layout work.

1 in = 72 pt = 6 pc

Core print relationship between inches, points, and picas.

1 cc = 12 dd

A cicero contains twelve didot points in traditional European typesetting.

pt = px × 72 / 96

Screen-side approximation that maps CSS pixels onto the 72-point print baseline.

Where this converter is most useful

Use it when a print brief, editorial template, and implementation environment all describe type differently. It is especially useful for magazines, packaging, signage proofs, multilingual editorial systems, and legacy style guides that preserve older unit systems.

The output sheet is a translation aid. Final production still depends on the application settings, font metrics, and actual layout engine used in the document or interface.

Frequently asked questions

What is the difference between a point and a pica?

A pica is larger. One pica equals twelve points, and six picas equal one inch in the common 72-point print system.

Are didot points the same as typographic points?

No. They are similar but not identical. Didot-based systems come from a different historical standard, which is why direct conversion is useful when print styles cross traditions.

Why does this converter include pixels?

Pixels help screen workflows approximate a typographic size using the common CSS reference of 96 pixels per inch. That is useful for handoff, even though pixels are not a universal physical print unit.

What is an agate line used for?

Agate measurements are still associated with dense tables, listings, and newspaper-style layouts where very small type specifications need a familiar production reference.

Typography Unit Converter

Typography unit converter

12 pt

Typography unit converter: points, picas, didot units, agate lines, and screen equivalents explained

Why typography units still vary

The base relationships behind the conversion sheet

Where this converter is most useful

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