Viewport Height (VH) is a responsive CSS unit that represents a percentage of the screen's visible height. Unlike pixels (PX), which are fixed units, VH adjusts dynamically based on the screen size, making it ideal for fluid and responsive web design.
Use this PX to VH Converter to quickly and accurately convert pixel values into viewport height for a seamless, responsive design.
A viewport is the visible area of a webpage within a browser window. On desktops, it is the size of the open browser window, while on mobile devices, the entire screen acts as the viewport.
Imagine a large painting inside a frame:
By default, when developers talk about the viewport, they are usually referring to the layout viewport.
Viewport height (VH) refers to the total height of the visible browser window. It excludes elements such as borders, margins, scrollbars, and browser chrome (including toolbars, tabs, and the address bar).
In CSS, VH is a unit that represents a percentage of the viewport's height. This makes it a useful tool for creating responsive web designs.
Using VH units ensures that elements dynamically adjust based on screen size, improving the user experience on different devices.
Viewport height (VH) is a CSS unit that adapts based on the height of the browser window. To convert VH to pixels (PX), you first need to determine the viewport height in pixels.
For example, if your current screen size is 1920px × 959px, then the viewport height is 959px.
To convert a specific pixel value into VH, apply the formula:
Let's say you want to convert 250px to VH with a viewport height of 959px:
So, 250px is approximately 26vh in a 959px-high viewport. This method helps ensure responsive web design across different screen sizes.
To retrieve the Viewport Height (VH) in pixels, you can use JavaScript. The window
object provides the innerHeight
property, which returns the height of the viewport in pixels.
This code returns the viewport height in pixels, allowing you to dynamically adjust elements for responsive web design.
Below is a reference table comparing common viewport heights on popular devices against specific pixel values.
PX | iPhone 12 Pro (844px) | iPad Pro 12.9" (1366px) | Samsung Galaxy S9+ (740px) |
---|---|---|---|
50px | 5.9vh | 3.6vh | 6.7vh |
60px | 7.1vh | 4.3vh | 8.1vh |
90px | 10.6vh | 6.5vh | 12.1vh |
200px | 23.6vh | 14.6vh | 27vh |
250px | 29.6vh | 18.3vh | 33.7vh |
280px | 33.1vh | 20.4vh | 37.8vh |
300px | 35.5vh | 21.9vh | 40.5vh |
600px | 71vh | 43.9vh | 81vh |
By understanding viewport height and how it scales across devices, you can ensure a fully responsive web design that adapts seamlessly to different screen sizes.