REM to VW Converter

Convert REM units to Viewport Width (VW) for fluid typography.

1.667vw
Common Viewports:

About REM to VW Converter

The REM to VW converter transforms root-relative units into viewport-based units, enabling truly fluid typography and spacing that scales with screen width. This conversion requires knowing both the root font size and the target viewport width to calculate accurate VW values.

Formula

VW = ((REM × Root Size) ÷ Viewport Width) × 100

Examples

2rem (1920px view) = 1.667vw
3rem (1920px view) = 2.5vw
2rem (375px mobile) = 8.533vw

Reference

  • • 1 VW = 1% of viewport width
  • • REM provides accessibility, VW provides fluid scaling
  • • Common to use clamp() combining both: clamp(1rem, 2vw, 3rem)
  • • Desktop viewports: 1920px, 1440px
  • • Mobile viewports: 375px, 414px

Frequency Asked Questions

Why convert REM to VW?

To create fluid scaling typography that respects base REM sizes.

How to convert 2rem to VW for 1440px?

2 × 16 = 32px. (32 ÷ 1440) × 100 = 2.222vw.

Should I use REM or VW?

Use both with clamp().

Can VW make text too small?

Yes. Always use a minimum size with max() or clamp().