4rem = 64px

4rem converts to 64 pixels when the root font-size is 16px. Multiply the rem value by 16 to get pixels: 4 × 16 = 64.

Formula

4rem × 16 = 64px

CSS Example

/* 4rem = 64px */
.element {
  font-size: 4rem; /* 64px at 16px base */
}

When to Use 4rem (64px)

A value of 4rem (64px) is commonly used for page headings and display text. Converting rem to px helps when you need exact pixel values for design specs, Figma mockups, or debugging layout issues.

Why Use PX?

REM (root em) units provide scalable, accessible sizing in CSS. Knowing that 4rem = 64px helps you verify your designs match mockups while keeping your code responsive.

Nearby Conversions

rem	px
2rem	32px	Convert →
2.25rem	36px	Convert →
2.5rem	40px	Convert →
2.75rem	44px	Convert →
3rem	48px	Convert →
3.5rem	56px	Convert →
4.5rem	72px	Convert →
5rem	80px	Convert →

Common Conversions

rem	px
0.25	4
0.5	8
0.75	12
1	16
1.25	20
1.5	24
2	32
2.5	40
3	48
5	80

Frequently Asked Questions

What is 4rem in pixels?▼

4rem equals 64px at the default browser font-size of 16px.

How do I convert 4rem to pixels?▼

Multiply 4 by 16 (the default root font-size): 4 × 16 = 64px.

Does 4rem always equal 64px?▼

Only when the root font-size is 16px (the browser default). If you've changed the root font-size, multiply 4 by your custom value instead.

Need More Conversions?

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