24px → REM

24px to REM — 1.5rem at 16px Base

At the default browser root size of 16px, 24px equals 1.5rem. Formula: rem = px ÷ 16.

Last reviewed: June 28, 2026

CSS snippet

.example {
  font-size: 1.5rem; /* 24px at 16px root */
  padding: 1.5rem;
}

PX to REM formula

rem = px ÷ root font size

24px ÷ 16px = 1.5rem

Worked example: To convert 24px at a 16px root, divide 24 by 16. 24 ÷ 16 = 1.5. Write font-size: 1.5rem; instead of font-size: 24px; so text scales when users enlarge their browser default font size.

Common use cases at 24px (1.5rem)

Category	Tailwind / design use	CSS property example
Font size	text-2xl (1.5rem)	`font-size: 1.5rem;`
Spacing	p-6, gap-6	`padding: 1.5rem;`
Gap / margin	p-6, gap-6	`gap: 1.5rem;`

  
Nearby pixel conversions
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Also see  20px to rem
 
and  30px to rem
.
 
 
 24px to REM FAQ
How do you convert 24px to rem?
Divide 24 by the root font size. At the default 16px base: 24 ÷ 16 = 1.5rem. Formula: rem = px ÷ root font size.
What is 24px in rem at 16px base?
At a 16px root font size, 24px equals exactly 1.5rem. This is the browser default unless your project or the user changes html { font-size }.
Should I use 1.5rem or 24px in CSS?
Use 1.5rem for typography and spacing that should scale with the user's root font-size preference — important for accessibility. Reserve 24px for fixed values like 1px borders or bitmap image dimensions.
How do I convert 1.5rem back to pixels?
Multiply 1.5rem by 16: 1.5 × 16 = 24px. Reverse formula: px = rem × root font size.
Where is 24px commonly used in web design?
24px (1.5rem) maps to text-2xl (1.5rem) in typical design systems. For Tailwind spacing, see p-6, gap-6. Check the use-case table on this page for CSS property examples.
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