48 rem equals 768 pixels assuming the default root font size is 16 pixels.
To convert rem to pixels, multiply the rem value by the browser’s root font size, which is usually 16 pixels. So, 48 rem × 16 = 768 px.
Conversion Tool
Result in pixel:
Conversion Formula
The formula for converting rem to pixels is:
pixels = rem × root font size
Because rem units are relative to the root element’s font size, multiplying the rem value by that font size gives the pixel equivalent. For most browsers, the root font size is 16 pixels.
Example calculation:
- Given: 48 rem
- Root font size: 16 pixels
- Calculation: 48 × 16 = 768 pixels
Conversion Example
- Convert 12 rem to pixels:
- Multiply 12 by 16 (root font size)
- 12 × 16 = 192 pixels
- Result: 192 pixels
- Convert 25 rem to pixels:
- 25 × 16 = 400 pixels
- Result: 400 pixels
- Convert 5.5 rem to pixels:
- 5.5 × 16 = 88 pixels
- Result: 88 pixels
- Convert 30 rem to pixels:
- 30 × 16 = 480 pixels
- Result: 480 pixels
- Convert 7 rem to pixels:
- 7 × 16 = 112 pixels
- Result: 112 pixels
Conversion Chart
This chart shows rem values from 23.0 to 73.0 and their pixel equivalents based on a 16-pixel root font size. To find a pixel value, locate the rem value in the first column and read across to see its pixel conversion.
| Rem | Pixels (px) |
|---|---|
| 23.0 | 368 |
| 28.0 | 448 |
| 33.0 | 528 |
| 38.0 | 608 |
| 43.0 | 688 |
| 48.0 | 768 |
| 53.0 | 848 |
| 58.0 | 928 |
| 63.0 | 1008 |
| 68.0 | 1088 |
| 73.0 | 1168 |
Related Conversion Questions
- How many pixels equal 48 rem in CSS?
- What is the pixel value for 48 rem if the root font size changes?
- Does 48 rem always equal 768 pixels on every browser?
- How to convert 48 rem to pixels manually?
- What if the default font size isn’t 16px, how does 48 rem convert?
- Can 48 rem be converted to pixels using JavaScript?
- Why does 48 rem sometimes render differently in pixels on different devices?
Conversion Definitions
rem: A CSS unit that stands for “root em,” representing a size relative to the root element’s font size. Unlike em, rem always uses the root font size as reference, ensuring consistent scaling across the webpage regardless of nesting or inheritance.
pixel: The smallest unit of measurement in digital imaging, representing a single point on a screen. Pixels are absolute units in CSS that define fixed sizes for elements, unaffected by font sizes or browser settings, making them useful for precise layout control.
Conversion FAQs
What happens when the root font size differs from 16 pixels for converting 48 rem?
If the root font size is changed from the default 16 pixels, the pixel value for 48 rem changes accordingly. For example, if the root font size is 20 pixels, then 48 rem equals 48 × 20 = 960 pixels. The conversion depends on the actual root font size in use.
Can rem units cause accessibility issues when converting to pixels?
Using rem units supports scalable and accessible design because users can adjust the root font size in browsers. However, relying only on fixed pixel values might reduce flexibility. Converting rem to pixel locks the size, possibly ignoring user preferences for text scaling.
Is the conversion from rem to pixel exact or approximate?
The conversion is exact if the root font size is known and fixed. Since rem is relative, the pixel value depends on the root font size at the moment of conversion. Variations may happen if users change browser default font sizes, making the pixel value dynamic rather than fixed.
How to handle conversions if root font size is set in percentages?
When root font size is set using percentages, for example 125%, the base pixel size changes. Since 100% equals 16 pixels by default, 125% equals 20 pixels. To convert 48 rem, multiply by 20 instead of 16, resulting in 960 pixels. The conversion formula adapts to the actual pixel size of root font.
Does device pixel density affect rem to pixel conversion?
Device pixel density influences how pixels appear visually but doesn’t change the conversion formula. The rem to pixel conversion works in CSS pixels, which are independent of device pixel ratio. However, higher density screens might render pixels smaller physically, but CSS calculations stay consistent.
