1 Vh to Px – Full Calculation Guide

1 vh equals the pixel value of 1% of the viewport height. For example, if your screen height is 900 pixels, then 1 vh equals 9 pixels.

In simple terms, the vh unit represents 1% of the browser’s current viewport height, so converting it to pixels requires multiplying the vh value by the viewport height in pixels divided by 100.

Conversion Tool

Conversion Formula

The conversion from vh to px is based on viewport height. Since 1 vh means 1% of the viewport height, the formula is:

pixels = (vh value) × (viewport height in pixels) / 100

Because vh is a relative measurement, it changes with screen size. For example, if the viewport height is 800 pixels, 1 vh equals 8 pixels.

Step-by-step example:

• Viewport height = 900 pixels
• Value to convert = 1 vh
• pixels = 1 × 900 / 100 = 9 px

Conversion Example

• 3 vh on a 1000px height screen:
  • Multiply 3 × 1000 / 100
  • 3 × 10 = 30 pixels
  • Result: 3 vh = 30 px
• 5 vh on a 600px height screen:
  • 5 × 600 / 100 = 5 × 6 = 30 pixels
  • So, 5 vh equals 30 px
• 10 vh on a 720px height screen:
  • 10 × 720 / 100 = 72 pixels
  • Thus, 10 vh = 72 px
• 0.5 vh on a 1080px height display:
  • 0.5 × 1080 / 100 = 5.4 pixels
  • Result: 0.5 vh is 5.4 px
• -2 vh on a 900px screen:
  • -2 × 900 / 100 = -18 pixels
  • This negative value may be used for offsets

Conversion Chart

The chart shows vh values from -24.0 to 26.0 converted to pixels, assuming a viewport height of 900 pixels. To use it, find your vh value in the first column and read across to see the pixel equivalent for a 900px tall screen.

Related Conversion Questions

• How many pixels equals 1 vh on a 1080p screen?
• What is the pixel size for 1 vh on mobile devices?
• Does 1 vh always convert to the same pixel value?
• How do I convert 1 vh to px in CSS calculations?
• What pixel height corresponds to 1 vh if my screen is 768px tall?
• How is 1 vh different from 1 px when designing a webpage?
• Can 1 vh be negative and how does that translate to pixels?

Conversion Definitions

vh: A CSS unit that measures 1% of the viewport’s height, where viewport is the visible area of a web page on a screen. Its value changes dynamically when the window resizes, making it useful for responsive design layouts that adapt to screen size.

px: A pixel is the smallest unit of digital image display, representing a single point on the screen. Its physical size varies between devices, but in web design, px is a fixed unit used to define exact sizes for elements, images, fonts, and spacing.

Conversion FAQs

Why does the pixel value for 1 vh change on different devices?

Because vh measures 1% of the viewport height, the pixel value shifts with the screen height. A taller screen means a larger pixel value per vh, while a shorter screen reduces it. This makes vh units flexible for responsive layouts but variable in absolute pixels.

How can I find the viewport height to convert vh to pixels?

You can get the viewport height by checking the window.innerHeight property in JavaScript or by using browser developer tools. This value tells how tall the visible window area is in pixels, needed for converting vh units precisely.

Is it possible for 1 vh to be zero pixels?

In normal circumstances, 1 vh will not be zero because it’s 1% of viewport height. However, if the viewport height becomes extremely small or minimized, then the calculated pixel value approaches zero, but practically it won’t be exactly zero.

Can vh units be negative and what does that mean in pixels?

Yes, vh values can be negative in CSS for positioning or offsetting elements. When converting, negative vh values multiply by the viewport height, resulting in negative pixel values that move the element upwards or outside normal boundaries.

Does zooming in or out on the browser affect the vh to px conversion?

Zooming changes the scale of the page but does not affect the viewport height in pixels reported by window.innerHeight, so the vh to px conversion stays consistent. However, the perceived size of elements might appear different due to zoom level.