If you are learning CSS or web design, you have probably seen font sizes written in pixels (px). Pixels feel simple because they look fixed. But in real websites, people use different screens and different settings. That is why many designers use em units, because em can scale with the base font size.
To quickly convert values without confusion, use a reliable px to em converter. This helps you convert pixel values into em based on your chosen base size.
Quick idea: If your base font size is 16px, then 16px = 1em, 24px = 1.5em, and 32px = 2em.
EM is relative. That means it can scale naturally when the base font size changes. This is helpful for responsive typography and accessibility.
em = px ÷ base font size
Example: if base is 16px, then 20px ÷ 16 = 1.25em. The blog page explains this with more examples.