CSS Unit Converter

Convert between px, em, rem, and other CSS units

CSS Unit Converter
Convert between different CSS units including pixels, em, rem, and viewport units

Used for rem calculations

Used for em calculations

Width: 1920px
Height: 1080px

Used for viewport unit calculations

CSS Unit Reference

Absolute Units

  • • px - pixels (screen pixels)
  • • pt - points (1/72 inch)
  • • pc - picas (12 points)
  • • in - inches
  • • cm - centimeters
  • • mm - millimeters

Relative Units

  • • em - relative to parent font size
  • • rem - relative to root font size
  • • % - percentage of parent

Viewport Units

  • • vh - viewport height (1% = 1vh)
  • • vw - viewport width (1% = 1vw)
  • • vmin - smaller of vh or vw
  • • vmax - larger of vh or vw