The End of Pixels: Why You Should Convert to REM

For decades, the "Pixel" (px) was the atomic unit of the web. It was solid, predictable, and exact. But the web has changed. We now browse on watches, 4K TVs, and tablets. More importantly, users demand control over their reading experience.

Enter **REM** (Root EM). Unlike pixels, which are static, REMs are distinct relative units. They flow. They scale. They adapt. Our **Pixel to REM Converter** is your bridge from the rigid design of the past to the flexible, accessible web of the future.

Why Accessibility Matters (and Why PX Fails)

Imagine a user with low vision. They go into their browser settings and set "Font Size" to "Very Large."

• If you used Pixels: Your text stays at `16px`. The user's preference is ignored. They squint, get frustrated, and leave.
• If you used REM: Your text defined as `1rem` scales up instantly because the "Root" size changed. You respected the user's choice.

Google and other search engines prioritize Accessible websites. Using REM is not just "nice to have"; it is a crucial SEO ranking factor.

How to Use This Converter

1. Set Your Base Size: Most browsers default to 16px. Unless you have manually changed the `html` font-size in your CSS, leave this at 16.
2. Type your value: Enter the pixel value from your design (e.g., from Figma or Photoshop).
3. Get the REM: Copy the result into your CSS. `font-size: 1.25rem;`

The "62.5% Strategy" Explained

You might see code like this in many CSS frameworks:

html {
  font-size: 62.5%; /* Sets base to 10px */
}
body {
  font-size: 1.6rem; /* Becomes 16px */
}

Why? Because dividing by 16 is hard mental math. Dividing by 10 is easy.
`14px` becomes `1.4rem`.
`24px` becomes `2.4rem`.
If you use this strategy, simply change the "Base Size" in our tool to **10px** to match your workflow.

Common Layout Patterns

It is not just for font sizes. Use REM for: