CSS Unit Converter (PX ↔ REM ↔ VW)
About PX ↔ VW
The Pixels (px) to Viewport Width (vw) CSS Converter calculates fluid, responsive viewport units (`value / viewport_width * 100`) based on target design artboard widths (e.g. 1920px desktop, 1440px laptop, 390px mobile).
How to Use PX ↔ VW
Step 1
Enter pixel value (e.g. `24px`) and design artboard width (e.g. `1440px`).
Step 2
Select decimal precision (default: 3 decimals).
Step 3
Review the calculated `vw` value and CSS code snippet.
Step 4
Click "Copy CSS".
Practical Use Cases for PX ↔ VW
Implementing Fluid Typography & Responsive Layouts
Convert fixed pixel typography and container paddings from Figma design files into fluid `vw` units that scale smoothly across screen sizes.
Generating CSS `clamp()` Formulas with `vw`
Generate responsive `font-size: clamp(16px, 2.5vw, 32px)` rules combining minimum, fluid `vw`, and maximum bounds.
Input & Output Examples
Converting 32px on a 1440px Artboard to vw
Pixels: `32px` | Viewport Width: `1440px`
`2.222vw` | Formula: `(32 / 1440) * 100` | CSS: `font-size: 2.222vw;`
Key Features & Performance
- ✓Configurable artboard base widths: 1920px (Desktop), 1440px (Laptop), 768px (Tablet), 390px (Mobile), or custom.
- ✓Bidirectional converter: converts px $\\rightarrow$ vw and vw $\\rightarrow$ px.
- ✓Generates copyable CSS snippets and fluid `clamp()` values.
- ✓100% Client-Side memory execution.
- ✓1-Click Copy CSS property.
Key Terminology & Definitions
`vw` (Viewport Width Unit)
A CSS unit where 1vw is equal to exactly 1% of the width of the current browser viewport window.
Fluid Typography
A web design technique where font sizes adjust dynamically and smoothly in proportion to the user's screen width.