Quick & easy-to-use pixel (px) to percentage (%) converter tool for web designers.
Width = 50%
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Using our pixel to percentage converter is easy-peasy. Just enter the px value you want to convert in the Pixels box and the tool will do conversions as you type in realtime and display the converted % value in the Percentage box. No need to press any convert button!
Our tool can also do reverse percentage to px conversions. So, if you change or enter the % value in the percentage box, then the tool will convert and display the px value in the Pixels box.
One another nifty feature that our tool offers is live width preview. Below the converter, you'll see a blue box that dynamically resizes to match the percentage value in the tool. This allows you to instantly visualize how the converted percentage will impact the width of an actual page element.
As per base (parent element size) - 1200px.
| Pixels | Percentage |
| 1px | 0.0833% |
| 10px | 0.8333% |
| 20px | 1.6667% |
| 30px | 2.5% |
| 40px | 3.3333% |
| 50px | 4.1667% |
| 60px | 5% |
| 70px | 5.8333% |
| 80px | 6.6667% |
| 90px | 7.5% |
| 100px | 8.3333% |
| 110px | 9.1667% |
| 120px | 10% |
| 130px | 10.8333% |
| 133px | 11.0833% |
| 140px | 11.6667% |
| 150px | 12.5% |
| 160px | 13.3333% |
| 170px | 14.1667% |
| 180px | 15% |
| 190px | 15.8333% |
| 200px | 16.6667% |
| Pixels | Percentage |
| 210px | 17.5% |
| 220px | 18.3333% |
| 230px | 19.1667% |
| 240px | 20% |
| 250px | 20.8333% |
| 260px | 21.6667% |
| 270px | 22.5% |
| 280px | 23.3333% |
| 290px | 24.1667% |
| 300px | 25% |
| 350px | 29.1667% |
| 400px | 33.3333% |
| 500px | 41.6667% |
| 600px | 50% |
| 700px | 58.3333% |
| 800px | 66.6667% |
| 900px | 75% |
| 1000px | 83.3333% |
| 1100px | 91.6667% |
| 1200px | 100% |
| 1300px | 108.3333% |
| 1400px | 116.6667% |
To do conversions for other px, % or base values use the tool above.
Percentage is always calculated in relative to something, right? So, in CSS as well, it is a relative unit to the size of the parent element. Therefore to convert pixels to percentage, you have to divide the pixel value with the size of the parent element (in px) and multiply by 100.
The formula to convert pixels to percentage:
Percentage (%) = Pixels (px) ÷ Size of the parent element (in px) x 100
For example, if you want to convert 400px to a percentage for setting the width of a container, and the parent element's size is 1200px, the calculation would be:
400px ÷ 1200px x 100 = 33.33%
So, it's easy math, but doing it multiple times for all page elements can indeed be tiring. That's where this px to percent converter tool will come to rescue as it allows quickly and easily to convert pixels to percentage and vice versa.
To determine the parent element size for converting pixels to percentages, there are a couple easy ways. First, you can inspect the element using your browser's developer tools. This will let you see the pixel dimensions of the parent container. Another option is to check the CSS stylesheet directly to see what width or height is set on the parent. Getting that parent size correct is super important for accurate pixel to percent calculations.
Pixels are a fixed-size unit, while percentages are relative. So pixels always represent the same value no matter what, but percentages are calculated based on the size of the parent element they're inside. For example, a 50% width means half the width of the parent container. So, pixels don't change, but percentages are flexible and responsive, which is great for creating layouts that look good on any screen size.
Percentages are relative to the parent container's dimensions whereas viewport width (vw) and viewport height (vh) units as their name suggests are relative to the current viewport's width and height, respectively. So vw and vh units allow the page design to smoothly scale based on the actual browser window size, giving you true responsive flexibility in your webpage designs.
Use percentages whenever you want elements to fluidly resize and adapt to different screen sizes or container dimensions. Percentages are perfect for setting widths, heights, padding, margins and even font sizes responsively. On the other hand, pixels are great when you need a fixed, unchanging size regardless of the container or viewport. Like setting an exact border width.