Guides

Typography, CSS pixels and point sizes

px, pt and mm look similar but come from web, print and physical length. The source decides the right interpretation.

px in ptpt in pxcss unit convertertypography unit conversion

Unit console

حوّل الوحدات مع الصيغة والسياق والدقة

UnitCloud مختبر قياس محلي للحياة اليومية والهندسة وتقنية المعلومات والطاقة والتنقل والتصميم.

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الطباعة

Fast path

px depends on output context. UnitCloud uses the CSS reference of 96 px per inch.

CSS pixel to Point

Point to CSS pixelpt → pxالطباعة CSS pixel to Pointpx → ptالطباعة Millimetre to Pointmm → ptالطباعة

Search and practice paths

الصيغةجدولExamplesخطأ شائعEveryday/engineeringExcel/CSVمحول دفعيPrint view

ptTypography, CSS pixels and point sizes

Factor origin

Factors come from the stored source family and are not derived from rounded display values.

Rounding rule

UnitCloud keeps calculating with stored factors and rounds only the displayed output by selected precision.

When not to use

Do not use as the sole basis for official, medical, safety-critical or contractual decisions.

Citation

Citation note: UnitCloud, conversion with formula, sources current as of May 2026. الطباعة. Source basis: NIST Guide to SI Appendix B · W3C CSS Values and Units.

Common questions

Are 16 px always 12 pt?

px, pt and mm look similar but come from web, print and physical length. The source decides the right interpretation.

When is CSS px not a physical screen pixel?

px, pt and mm look similar but come from web, print and physical length. The source decides the right interpretation.

What is the factor for CSS pixel to Point?

1 px = 0.75 pt

Which formula does CSS pixel to Point use?

1 px = 0.75 pt at 96 dpi. Then the value is converted through the base unit pt into Point.