How to Convert REM to PX Using Java

Jan 15, 2024

1 min read

Published in
Java

How to convert REM to PX using Java

Follow this simple code to convert REM to PX using Java

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public class RemToPxConverter {

    // Standard conversion factor: 1rem = 16px
    private static final int BASE_FONT_SIZE = 16;

    public static void main(String[] args) {
        // Example usage
        double remValue = 2.5;
        double pxValue = convertRemToPx(remValue);

        System.out.println(remValue + "rem is equal to " + pxValue + "px");
    }

    private static double convertRemToPx(double remValue) {
        // Conversion formula: px = rem * baseFontSize
        return remValue * BASE_FONT_SIZE;
    }
}

Explanation:

  1. BASE_FONT_SIZE: This constant represents the base font size in pixels. The standard conversion factor is 1rem = 16px, which is a common default in browsers.

  2. convertRemToPx(): This method takes a value in rem and converts it to pixels using the formula px = rem * baseFontSize.

  3. main(): In this example, we use the convertRemToPx() method to convert a sample remValue (2.5) to pixels and print the result.

You can customize the remValue in the main() method to test with different values. Make sure to adjust the BASE_FONT_SIZE if your project uses a different base font size.

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