Viewport-to-Pixel Converter
Fast, accurate and free online viewport piksele converter tool running directly in your browser.
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Other tools you may find usefulViewport to Pixels Converter – What are vh, vw, vmin and vmax units?
Responsive website design (RWD – Responsive Web Design) is an absolute standard in modern web development. Creating interfaces that look flawless on both 320-pixel smartphone screens and massive 4K monitors requires flexible units of measurement. In CSS stylesheets, in addition to traditional pixels (px) or units relative to the size of the base font (em, rem), units based on the browser window, i.e. the so-called **Viewport Units**:vw, vh, vminandvmax.
Our free tool – **Viewport to Pixel Converter** – allows you to quickly and precisely convert these units into traditional pixels (and vice versa) depending on the current or defined screen resolution (width and height of the working area). This is an indispensable calculator for web designers, front-end developers and UI designers who want to precisely control the dimensions of elements on various devices.
Viewport unit definitions in CSS
- vw (Viewport Width):Corresponds to 1% of the total width of the browser window (viewport). For example, if the screen width is 1920 pixels, then \( 1\text{vw} = 19.2\text{px} \) and \( 100\text{vw} \) is the full screen width (\( 1920\text{px} \)).
- vh (Viewport Height):Corresponds to 1% of the total height of the browser window. If the screen height is 1080 pixels, then \( 1\text{vh} = 10.8\text{px} \), and \( 100\text{vh} \) is the full height of the canvas (\( 1080\text{px} \)).
- vmin (Viewport Minimum):Refers to the smaller of the viewport width or height. It is calculated by the formula: \(\text{vmin} = \min(\text{vw}, \text{vh})\). For example, for a vertical screen (phone: width 375px, height 812px) 1vmin will be equal to 1% of 375px (i.e. 3.75px).
- vmax (Viewport Maximum):Refers to the larger of the viewport width or height. The formula is: \(\text{vmax} = \max(\text{vw}, \text{vh})\). For the above-mentioned phone, 1vmax is 1% of 812px (i.e. 8.12px).
Mathematical formulas for converting Viewport units to Pixels
The conversion between viewport units and pixels is based on simple linear relationships. Below are the basic formulas used by our calculator:
Converting vw to pixels (px):
\[ px = \frac{vw \times W_{\text{viewport}}}{100} \]Where \( W_{\text{viewport}} \) is the current screen width in pixels.
Converting vh to pixels (px):
\[ px = \frac{vh \times H_{\text{viewport}}}{100} \]Where \( H_{\text{viewport}} \) is the current screen height in pixels.
Converting pixels (px) to vw:
\[ vw = \frac{px \times 100}{W_{\text{viewport}}} \]Converting pixels (px) to vh:
\[ vh = \frac{px \times 100}{H_{\text{viewport}}} \]Comparison table: Dimensions in px for popular screen resolutions
The table below lists the pixel values corresponding to selected percentages of the viewport width (vw) and height (vh) for the most popular devices:
| Device and resolution | 1vw (px) | 10vw (px) | 50vw (px) | 1vh (px) | 10vh (px) | 100vh (px) |
|---|---|---|---|---|---|---|
| Smartphone vertical (375 x 812 px) | 3.75 px | 37.5 px | 187.5 px | 8.12 px | 81.2 px | 812 px |
| Tablet vertical (768 x 1024 px) | 7.68 px | 76.8 px | 384 px | 10.24 px | 102.4 px | 1024 px |
| Laptop HD Ready (1366 x 768 px) | 13.66 px | 136.6 px | 683 px | 7.68 px | 76.8 px | 768 px |
| Full HD monitor (1920 x 1080 px) | 19.2 px | 192 px | 960 px | 10.8 px | 108 px | 1080 px |
| Ultra HD 4K monitor (3840 x 2160 px) | 38.4 px | 384 px | 1920 px | 21.6 px | 216 px | 2160 px |
How to use viewport to pixel converter? Step-by-step instructions
- Specify the base resolution:Enter the Width and Height of the screen in pixels. By default, the calculator assumes standard values for desktop or laptop computers (e.g. 1920 x 1080).
- Select conversion direction:Decide whether you want to convert viewport units to pixels or pixels to viewport units.
- Enter value:Enter a numerical value in the appropriate field (e.g. 50 in the vw field or 200 in the px field).
- Read the result:The tool will automatically, in real time, calculate the entered value and display the exact result in pixels or CSS units.
Frequently asked questions (FAQ)
What is the difference between vw and percentage (%) in CSS?
The unitvwalways refers directly to the total width of the browser window (viewport), ignoring the structure of the HTML document. In turn, the unit%(percentage) refers to the width of the parent element. If the parent div has a width set to 500px, then 100% inside it will give us 500px, while 100vw on a 1920px wide screen will always give 1920px.
When should you use vmin and vmax in web design?
The vmin and vmax units are extremely useful when creating interfaces that adapt to screen orientation (e.g. mobile applications displayed vertically and horizontally). They are perfect for scaling header texts, round graphic elements or browser game interfaces, where we want the element to never exceed the screen boundaries or always fill the optimal space regardless of the phone's rotation.
Do viewport units take into account the width of the scrollbar?
Yes, according to the CSS specification, viewport units (vw, vh) are calculated taking into account the scrollbar. This means that if a vertical scrollbar appears on a page, an element with a width of 100vw may slightly extend beyond the visible area, causing a horizontal scrollbar to appear. In these situations, it may be a safer option to fully adjust the width to use 100% width on the parent element.
How does vh behave on mobile devices (address bar problem)?
On mobile versions of browsers (e.g. Safari on iOS or Chrome on Android), dynamic address (tool) bars can hide and show while scrolling. This caused the classic 100vh to suddenly change dimensions, causing annoying jumps in interface elements. To prevent this, modern CSS units such asdvh(dynamic viewport height),svh(small viewport height), andlvh(large viewport height) have been introduced to precisely deal with this problem.
Does the converter allow you to convert rem units to pixels?
This particular calculator focuses on the relationship between the browser window (viewport) and pixels. To convert font units (rem, em) to pixels, we recommend using a dedicated px to rem converter because the calculations there are based on the base font size (root font-size, usually 16px) and not on the physical resolution of the device's screen.