PX to REM Converter

Differences Between px and rem

Pixels (px) are a fixed unit of measurement commonly used in digital displays. They represent a single point on the screen and do not scale with the viewport or user settings. Root Em (rem), on the other hand, is a relative unit that scales according to the root element's font size, typically the HTML element. This makes rem more flexible for responsive design.

Advantages of Using rem

Using rem units allows for better scalability and consistency across different screen sizes and resolutions. Since rem is relative to the root element's font size, adjusting the font size of the root element will proportionally scale all elements using rem units. This is particularly useful for responsive design and accessibility, as it respects user preferences for font size.

How to Convert px to rem

To convert pixels to rem, you need to know the root element's font size. By default, most browsers set the root font size to 16px. The formula for conversion is: rem = px / root font size

For example, to convert 32px to rem: 32px / 16px = 2rem

Frequently Asked Questions

Why should I use rem instead of px?

Using rem allows for more scalable and consistent layouts. It ensures that your design can adapt to different screen sizes and user settings, improving accessibility.

How do I set the root font size?

You can set the root font size using CSS on the HTML element. For example:

html {
    font-size: 16px;
}

Can I use rem for all elements?

Yes, you can use rem for most elements to ensure consistency. However, for fine-tuning certain elements, you might still use other units like em or px.