1 vh equals to the pixel value that is 1% of the viewport height. If your screen height is 900px, then 1 vh is 9px.
Because vh units are relative to the viewport height, the exact pixel value of 1 vh changes with the height of your browser window or device screen. This makes vh useful for responsive designs that adapt to different screen sizes.
Conversion Tool
Result in px:
Conversion Formula
The formula to convert vh to px is:
px = (vh / 100) × viewport height in pixels
This works because 1 vh is defined as 1% of the current viewport height. So multiplying vh by the viewport height divided by 100 gives the pixel equivalent.
For example, if your viewport height is 800px and you want to convert 1 vh:
- Calculate 1% of 800px: 1 / 100 × 800 = 8
- So, 1 vh = 8 px
Conversion Example
- Convert 5 vh when viewport height is 900px:
- Calculate 5 / 100 = 0.05
- Multiply 0.05 × 900 = 45 px
- Therefore, 5 vh = 45 px
- Convert 10 vh with 768px viewport height:
- 10 / 100 = 0.1
- 0.1 × 768 = 76.8 px
- 10 vh equals 76.8 px
- Convert 2.5 vh when viewport height is 1024px:
- 2.5 / 100 = 0.025
- 0.025 × 1024 = 25.6 px
- So, 2.5 vh = 25.6 px
- Convert 15 vh at 600px viewport height:
- 15 / 100 = 0.15
- 0.15 × 600 = 90 px
- So, 15 vh equals 90 px
Conversion Chart
| vh | px (assuming viewport height 900px) |
|---|---|
| -24.0 | -216.0000 |
| -20.0 | -180.0000 |
| -15.0 | -135.0000 |
| -10.0 | -90.0000 |
| -5.0 | -45.0000 |
| 0.0 | 0.0000 |
| 1.0 | 9.0000 |
| 5.0 | 45.0000 |
| 10.0 | 90.0000 |
| 15.0 | 135.0000 |
| 20.0 | 180.0000 |
| 26.0 | 234.0000 |
This chart shows vh values on the left, and their pixel equivalents on the right assuming the viewport height is 900px, so you can quickly find px values without calculation. Negative values indicate a negative pixel offset.
Related Conversion Questions
- How many pixels equals 1 vh on a 1080px tall screen?
- What is the px value for 1 vh if my viewport height changes?
- Can 1 vh be converted to pixels without knowing viewport height?
- How does 1 vh translate to px on mobile devices?
- Is 1 vh in px always the same across different browsers?
- What affects the px size of 1 vh unit in CSS?
- How to calculate 1 vh to px for responsive design?
Conversion Definitions
vh: The vh unit in CSS means viewport height, representing 1% of the height of the browser window or device screen. It is a relative length that adjusts dynamically when the viewport size changes, making it useful for responsive layouts that adapt to different screen heights.
px: The px unit is an absolute length unit representing pixels, the smallest single point a screen can display. Pixels are fixed-size units used for precise layout control, but they do not scale with screen or viewport size, unlike relative units like vh or em.
Conversion FAQs
Can the pixel value of 1 vh change if I resize the browser window?
Yes, the pixel value of 1 vh depends on the viewport height, so resizing the browser window vertically will change the viewport height and therefore the px equivalent of 1 vh. This makes vh units flexible but requires recalculations if exact pixel values are needed.
Is 1 vh equal to 1% of the screen height or the browser window height?
1 vh is 1% of the viewport height, which usually means the visible browser window area, excluding browser toolbars or OS UI elements. It does not always equal the total screen height, especially on devices with dynamic UI elements.
Why does 1 vh sometimes appear different on mobile devices compared to desktop?
Mobile browsers often show or hide UI elements like address bars while scrolling, which changes the viewport height dynamically. This causes the px value of 1 vh to fluctuate, unlike on desktop where viewport height remains more stable.
Can 1 vh be negative, and what does that mean in pixels?
CSS allows negative values for vh units in some contexts, which correspond to negative pixel offsets relative to the viewport height. Negative 1 vh means moving or sizing an element in the opposite direction by 1% of the viewport height.
How to convert vh to px if I don’t have access to JavaScript?
Without JavaScript, you must manually measure the viewport height in pixels using browser developer tools or screen specs, then apply the formula: (vh / 100) × viewport height in px. This manual step is necessary because vh is relative to viewport height which can vary.