REM to VW Converter
Use this free online rem to vw converter tool to convert root em units to viewport width units. This conversion combines relative typography sizing with viewport-based responsive units. The converter requires both root font-size and viewport width for accurate calculations.
To convert rem to vw, first multiply the rem value by the root font-size to get pixels, then divide by viewport width and multiply by 100. The default values are 16px root font-size and 1920px viewport width. This creates responsive sizing that scales with both root font and viewport.
Conversion Formula
vw = (rem × root font-size ÷ viewport width) × 100
For example, to convert 3rem to vw with 16px root font-size and 1920px viewport, calculate (3 × 16 ÷ 1920) × 100 = 2.5vw. This means 3rem occupies 2.5% of a 1920px viewport.
REM to VW Converter Conversion Table (Viewport Width: 1920px, Root: 16px)
| REM | VW |
|---|---|
| 0.0625rem | 0.0521vw |
| 0.25rem | 0.2083vw |
| 0.5rem | 0.4167vw |
| 0.75rem | 0.625vw |
| 1rem | 0.8333vw |
| 1.25rem | 1.042vw |
| 1.5rem | 1.25vw |
| 2rem | 1.667vw |
| 2.5rem | 2.083vw |
| 3rem | 2.5vw |
| 4rem | 3.333vw |
| 6rem | 5vw |
| 8rem | 6.667vw |
| 10rem | 8.333vw |
| 11rem | 9.167vw |
| 12rem | 10vw |
| 13rem | 10.83vw |
| 14rem | 11.67vw |
| 16rem | 13.33vw |
| 20rem | 16.67vw |
| 30rem | 25vw |
| 36rem | 30vw |
| 48rem | 40vw |
| 50rem | 41.67vw |
| 60rem | 50vw |
| 62rem | 51.67vw |
| 64rem | 53.33vw |
| 70rem | 58.33vw |
| 75rem | 62.5vw |
| 80rem | 66.67vw |
| 90rem | 75vw |
| 100rem | 83.33vw |
| 120rem | 100vw |
What is REM?
REM (Root EM) is a relative CSS unit based on the root element's font size, typically 16px by default in most browsers. Unlike EM units which cascade based on parent elements, REM provides consistent sizing throughout the document. This makes REM ideal for creating scalable, accessible designs that respect user font-size preferences.
What is VW?
Viewport Width (vw) is a relative CSS unit where 1vw equals 1% of the browser viewport's width. This unit scales automatically as the viewport changes, making it ideal for responsive typography and fluid layouts. VW units are particularly useful for creating designs that adapt seamlessly across different screen sizes without media queries.