The PX to VW converter is one of the most essential tools in modern web design. Fixed pixel (px) units were fine when everyone browsed on similar screens, but with devices ranging from small phones to ultra-wide monitors, viewport-relative units like vw have become the backbone of fluid, responsive layouts.
VW is a relative unit based on the width of the browser viewport: 1vw equals 1% of the viewport width. If the screen is 1000px wide, 1vw is 10px; shrink the window to 500px and 1vw automatically becomes 5px. This lets elements scale in proportion to the screen without writing media queries.
Enter your design file's reference width (e.g. a 1440px or 375px Figma artboard) in the Breakpoints field, then type any px value to get the vw equivalent instantly. The CSS batch converter on the right finds every px value in your stylesheet and converts them all at once — a huge time-saver when converting an existing project.
Not everything should be vw. Font sizes can become unreadably small on narrow screens, so combine vw with clamp() to set minimum and maximum sizes. Keep borders, box shadows, and other hairline details in fixed px — they look crisper that way. Also remember that text sized purely in vw does not respond to browser zoom, which is an accessibility concern.
vw = (px value ÷ reference viewport width) × 100. On a 1920px design, 96px equals (96 ÷ 1920) × 100 = 5vw.
Use the artboard width of your design file. Desktop mockups are usually 1920px or 1440px; mobile mockups are usually 375px or 360px.
It works, but text can become too small on narrow screens. Use CSS clamp() to set minimum and maximum sizes, and keep accessibility in mind — vw-only fonts ignore browser zoom.
Yes. Paste your CSS into the batch converter on this page and every px value is converted in one click. The reverse (vw → px) is also supported.