Conversion Form

MM
PT

About the Unit

Millimeter (mm): The millimeter (mm) is a physical unit of measurement, 1/10th of a centimeter. Like cm, mm is commonly used in graphic design and printing, where precise physical measurements are needed. In CSS, mm is useful for defining width, height, and other dimensions of elements in layouts that will be printed or converted to other physical formats. Using mm is an effective way to ensure precise and consistent layout dimensions during the printing process. For digital designs, the mm unit may be less practical, as most web interfaces benefit more from relative units to ensure a more adaptive user experience. However, for technical documents or precision graphics, mm may be the best choice.

Pro Tip: mm → pt

1mm = 2.83465pt. Convert mm to pt for print typography.

Quick Reference: Unit Conversion by Tens

MMPT
10mm28.346528pt
20mm56.693055pt
30mm85.039583pt
40mm113.38611pt
50mm141.732638pt
60mm170.079165pt
70mm198.425693pt
80mm226.77222pt
90mm255.118748pt
100mm283.465276pt
110mm311.811803pt
120mm340.158331pt
130mm368.504858pt
140mm396.851386pt
150mm425.197913pt
160mm453.544441pt
170mm481.890969pt
180mm510.237496pt
190mm538.584024pt
200mm566.930551pt
210mm595.277079pt
220mm623.623606pt
230mm651.970134pt
240mm680.316661pt
250mm708.663189pt

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 mm and pt without testing on different screen sizes.

Real Code Example

/* Mobile-first card with mm → pt */
.card {
  padding: 0mm;     /* undefinedpt */
  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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