PX to Percentage Converter

Convert pixels to percentage units instantly for responsive web design

About PX to Percentage Conversion

Percentage units in CSS are relative to the size of their parent element, making them ideal for responsive design. Unlike pixels (px) which are fixed units, percentage units scale with their container.

How to Use This Tool

  1. Enter the pixel value you want to convert
  2. Specify the parent element's size in pixels
  3. Click "Convert to Percentage" to get the equivalent % value
  4. Copy the result and use it in your CSS

The Conversion Formula

The formula to convert pixels to percentage is:

percentage = (px / parent-size) × 100%

For example, if your parent element is 200px wide and you want to convert 50px to percentage:

(50px / 200px) × 100% = 25%

Why Use Percentage Units?

Best Practices