VH to PX Converter
Convert viewport height units to pixels for precise control in your responsive designs
VH to PX Calculator
VH (viewport height) units represent a percentage of the browser's viewport height. 1vh equals 1% of the viewport height. This converter translates vh values back to pixels based on a specific viewport size.
Conversion Result
Formula: Pixels = VH value × (Viewport Height ÷ 100)
Example: 1vh × (768px ÷ 100) = 7.68px
Device Comparison
See how this value converts across different viewport heights:
| Device | Viewport Height | VH Value | Pixel Value |
|---|
Batch Converter
Convert multiple VH values at once. Enter values separated by spaces, commas, or new lines.
Batch Results
| VH | Pixels | CSS Code |
|---|
Common VH to Pixel Conversions
Reference table for commonly used VH values at different viewport heights:
| VH Value | Desktop HD (1080px) | Desktop (768px) | Tablet (1024px) | Mobile (667px) |
|---|---|---|---|---|
| 1vh | 10.8px | 7.68px | 10.24px | 6.67px |
| 5vh | 54px | 38.4px | 51.2px | 33.35px |
| 10vh | 108px | 76.8px | 102.4px | 66.7px |
| 25vh | 270px | 192px | 256px | 166.75px |
| 50vh | 540px | 384px | 512px | 333.5px |
| 75vh | 810px | 576px | 768px | 500.25px |
| 100vh | 1080px | 768px | 1024px | 667px |
Frequently Asked Questions
Converting from VH to pixels is useful in several scenarios:
- Debugging Layouts - When you need to know the exact pixel height a VH-based element will have on specific devices.
- Setting Constraints - When applying min-height or max-height constraints to VH-sized elements.
- Mixed Unit Calculations - When combining VH units with pixel-based measurements in complex layouts.
- Design to Development - When translating between design mockups (often using pixels) and responsive implementations.
- Browser Compatibility - When creating fallbacks for browsers with limited viewport unit support.
For example, you may want to ensure a 50vh section doesn't become too short on mobile devices by adding a min-height: 300px; constraint – knowing at which viewport height this constraint becomes active helps with layout planning.
The formula to manually convert VH to pixels is straightforward:
Step-by-step process:
- Identify the viewport height in pixels
- Divide the viewport height by 100 to get the value of 1vh in pixels
- Multiply the result by your VH value
Example 1: Convert 10vh to pixels on a 768px viewport height
10vh = 10 × (768 ÷ 100) = 10 × 7.68 = 76.8px
Example 2: Convert 25vh to pixels on a 1080px viewport height
25vh = 25 × (1080 ÷ 100) = 25 × 10.8 = 270px
Remember that the pixel equivalent of a VH value will always change proportionally with the viewport height, which is what makes VH units responsive.
Yes, using 100vh on mobile browsers can be problematic due to how mobile browsers handle their viewport height calculations:
The Mobile Viewport Issue
When using 100vh on mobile browsers, you may encounter these issues:
- Mobile browsers include the address bar in the viewport height calculation
- When scrolling, the address bar may appear/disappear, changing the available viewport height
- This can cause jumpy layouts or elements that extend beyond the visible area of the screen
- Content at the bottom of 100vh elements might be partially hidden behind navigation bars or completely inaccessible
Solutions and Workarounds
Several approaches can help address the 100vh mobile issue:
1. Using the newer viewport units (when supported):
height: 100dvh; /* Dynamic viewport height */height: 100svh; /* Small viewport height */height: 100lvh; /* Large viewport height */
These newer units are designed to better handle mobile viewports, with dvh being the most useful for full-height layouts.
2. Using JavaScript to set a CSS variable:
// JavaScript
window.addEventListener('resize', () => {
document.documentElement.style.setProperty('--vh', `${window.innerHeight * 0.01}px`);
});
// CSS
.full-height {
height: 100vh; /* Fallback */
height: calc(var(--vh, 1vh) * 100);
}
3. Using alternative approaches:
min-height: 100vh;height: 100%; min-height: 100vh;height: -webkit-fill-available; /* For iOS Safari */
Always test your VH-based layouts on actual mobile devices. Browser developer tools' device emulation doesn't always accurately represent how mobile browsers handle viewport units.
Modern CSS provides several powerful ways to combine VH units with pixels for flexible yet controlled layouts:
1. Using the calc() function
The calc() function allows you to mix units in mathematical expressions:
height: calc(100vh - 80px); /* Full viewport height minus a fixed header */
margin-top: calc(5vh + 20px); /* Responsive margin with a minimum */
2. Using min(), max(), and clamp()
These CSS functions allow you to set boundaries for responsive values:
height: min(500px, 70vh); /* Whichever is smaller: 500px or 70vh */
height: max(300px, 50vh); /* Whichever is larger: 300px or 50vh */
height: clamp(250px, 60vh, 600px); /* Between 250px and 600px, scaling with viewport */
3. Common Use Patterns
- Responsive sections with minimum height:
min-height: max(400px, 70vh);Ensures a section is at least 400px tall but grows to 70% of viewport height on larger screens.
- Full-height content area with fixed header/footer:
height: calc(100vh - 60px - 40px); /* Viewport minus header minus footer */Creates a content area that fills the available space between fixed elements.
- Vertical spacing that scales but has limits:
margin-bottom: clamp(20px, 5vh, 60px);Margin that scales with viewport height but stays within reasonable bounds.
- Hero sections with minimum and maximum heights:
height: clamp(400px, 80vh, 800px);Creates a hero section that responds to the viewport but doesn't become too short or too tall.
Combining units gives you the best of both worlds: the responsiveness of viewport units with the reliability of absolute pixel constraints.
About VH Units
VH (Viewport Height) units are relative values that represent a percentage of the browser's viewport height. 1vh equals 1% of the viewport height, making them ideal for creating layouts that scale vertically with the screen.
Benefits of VH Units
-
Full-Height Layouts: Easily create sections that fill the viewport
-
Vertical Responsiveness: Elements scale automatically with the viewport height
-
Aspect Independence: Heights that work regardless of parent container
-
Proportional Spacing: Vertical margins and padding that scale with the viewport
This converter tool helps you calculate what a specific VH value will be in pixels at different viewport heights, giving you precise control while still using responsive units.
CSS Usage Examples
Common ways to use VH units in your CSS:
/* Full-height sections */
.hero {
height: 100vh;
display: flex;
align-items: center;
}
/* Partial-height sections */
.section {
min-height: 60vh;
padding: 5vh 0;
}
/* Fixed-height headers */
header {
height: 10vh;
position: sticky;
top: 0;
}
/* Content area accounting for header */
main {
min-height: calc(100vh - 10vh);
}
/* Vertical centering */
.centered {
position: absolute;
top: 50vh;
transform: translateY(-50%);
}
/* Vertical spacing */
.margin-vertical {
margin: 5vh 0;
}
/* Modal constraints */
.modal-content {
max-height: 80vh;
overflow-y: auto;
}
/* Minimum heights */
.card {
min-height: 30vh;
}
/* Image aspect control */
.banner-image {
height: 40vh;
object-fit: cover;
}For mobile browsers, consider using dvh (dynamic viewport height) units where supported, which handle mobile browser UI elements better: height: 100dvh;