HTML Link & Heading Extractor
About PX ↔ VH
The Pixels (px) to Viewport Height (vh) CSS Converter calculates viewport height units (`value / viewport_height * 100`) based on design viewport heights (e.g. 1080px desktop, 900px laptop, 844px mobile) for full-height hero sections and modals.
How to Use PX ↔ VH
Step 1
Enter your pixel dimension and target viewport height.
Step 2
Review calculated `vh` percentage value.
Step 3
Click "Copy CSS Declaration".
Practical Use Cases for PX ↔ VH
Designing Full-Screen Hero Sections & Landing Pages
Convert pixel height specifications into responsive `vh` units for landing page hero banners, slideshows, and full-screen video sections.
Building Proportional Modal Dialogs & Sidebars
Calculate vertical heights and max-height constraints that fit cleanly within the user's vertical screen space.
Input & Output Examples
Converting 540px on a 1080px Screen to vh
Pixels: `540px` | Viewport Height: `1080px`
`50vh` | Formula: `(540 / 1080) * 100` | CSS: `height: 50vh;`
Key Features & Performance
- ✓Presets: 1080px (Full HD), 900px (Laptop), 844px (iPhone 14/15), or custom viewport heights.
- ✓Bidirectional conversion: px $\\rightarrow$ vh and vh $\\rightarrow$ px.
- ✓Includes modern `dvh`, `svh`, and `lvh` dynamic viewport unit comparisons.
- ✓100% Client-Side memory execution.
- ✓1-Click Copy CSS declaration.
Key Terminology & Definitions
`vh` (Viewport Height Unit)
A CSS unit where 1vh is equal to exactly 1% of the height of the current browser viewport window.
`dvh` (Dynamic Viewport Height)
A modern CSS unit that automatically adjusts when mobile browser address bars expand or collapse.