Conversion Form

PC
EM

About the Unit

Pica (pc): The pica unit (pc) is another traditional typographic unit used in printing. 1pc is equivalent to 12 points (pt), and its origin dates back to early typographic systems. Although rarely used in web design, the pica unit still finds application in typography and graphic design, especially when working with print systems and physical documents. When using the pc unit, you are essentially working with a value that is larger than the point, which can be helpful in typographic projects where font sizes or other elements need to be larger. In CSS, the pica unit can be used to define font sizes, but it is more commonly found in print contexts rather than in digital web design. Its usefulness is limited in most digital designs, as most projects benefit more from relative units.

Pro Tip: pc → em

Pica is used for print typography. Use em for relative text sizes.

Quick Reference: Unit Conversion by Tens

PCEM
10pc160em
20pc320em
30pc480em
40pc640em
50pc800em
60pc960em
70pc1120em
80pc1280em
90pc1440em
100pc1600em
110pc1760em
120pc1920em
130pc2080em
140pc2240em
150pc2400em
160pc2560em
170pc2720em
180pc2880em
190pc3040em
200pc3200em
210pc3360em
220pc3520em
230pc3680em
240pc3840em
250pc4000em

Live Unit Preview

See how different CSS units affect the size of the box below:

10px

10rem

10em

10%

10vw

10vh

Common Mistake

Be cautious when mixing pc and em without testing on different screen sizes.

Real Code Example

/* Mobile-first card with pc → em */
.card {
  padding: 0pc;     /* undefinedem */
  font-size: 1.5rem;
  width: min(90vw, 40ch);
}
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Keyboard Shortcuts

  • Ctrl + C: Convert
  • Ctrl + I: Invert units
  • Esc: Reset values

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