240px = 15rem

240 pixels converts to 15rem when the root font-size is 16px (the browser default). This conversion is calculated by dividing the pixel value by the base font size: 240 ÷ 16 = 15.

Formula

240px ÷ 16 = 15rem

CSS Example

/* 240px as rem */
.element {
  width: 15rem; /* 240px */
}

When to Use 240px (15rem)

A value of 240px (15rem) is commonly used for component widths, card sizes, sidebar widths, and image containers. In responsive web design, using 15rem instead of 240px ensures your components and containers scale proportionally when users change their browser font size settings.

Why Use REM?

REM units are relative to the root element's font-size, making them ideal for accessible, responsive designs. When you write 15rem instead of 240px, your layout respects user preferences — if someone sets their browser to a larger font size for readability, all your rem-based values scale up proportionally.

Nearby Conversions

px	rem
120px	7.5rem	Convert →
128px	8rem	Convert →
140px	8.75rem	Convert →
150px	9.375rem	Convert →
160px	10rem	Convert →
176px	11rem	Convert →
192px	12rem	Convert →
200px	12.5rem	Convert →

Common Conversions

px	rem
8	0.5
10	0.625
12	0.75
14	0.875
16	1
18	1.125
20	1.25
24	1.5
32	2
48	3
64	4
96	6

Frequently Asked Questions

What is 240px in rem?▼

240px is 15rem. Divide 240 by 16 (the default root font-size) to get 15.

How do I convert 240px to rem in CSS?▼

Replace 240px with 15rem in your CSS. For example: font-size: 15rem; which equals 240px at the default 16px base.

Why use 15rem instead of 240px?▼

Using 15rem makes your design responsive and accessible. If a user changes their browser font size, 15rem scales proportionally while 240px stays fixed.

What if my base font-size is not 16px?▼

If your root font-size is different (e.g., 14px), divide 240 by that value instead. At 14px base: 240 ÷ 14 = 17.143rem.

Is 15rem the same in all browsers?▼

Yes, 15rem equals 240px in all modern browsers since they all default to a 16px root font-size. The value only changes if the user or your CSS explicitly sets a different root font-size.

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