Design Unit Converter
Easily convert between pixels, points, inches, centimeters, and more.
An essential tool for web design and print work.
em/rem/ch/ex and vw/vh are relative units, so results depend on the reference values below. ch/ex vary by font, so an approximation (0.5em) is used.
Frequently Asked Questions
What's the difference between px and rem?
px is always a fixed absolute size, while rem scales relative to the root (html) element's font size. For accessibility, it's generally recommended to use rem for font sizes and px for things that should stay fixed, like borders.
When should I use vw or vh?
Use them when an element's size should scale with the viewport, such as a full-width banner or a hero section that should always fill the visible screen height.
Which units are used for print work?
Print design typically uses mm, cm, pt (points), and pc (picas). Use this calculator to convert between web px and actual print dimensions.