24 px is equal to 1.5 rem.
The conversion from pixels to rem units depends on the root font size, which is commonly 16 pixels in web browsers. Dividing 24 pixels by 16 pixels gives the equivalent rem value of 1.5. This allows scaling elements relative to the root font size, making layouts more flexible.
Conversion Tool
Result in rem:
Conversion Formula
The formula to convert pixels (px) to rem units is:
rem = px ÷ root font size
In most browsers, the root font size is set to 16 pixels by default. So, to convert 24 px to rem, you divide 24 by 16.
Step-by-step:
- Take the pixel value: 24 px
- Divide it by 16 (root font size): 24 ÷ 16 = 1.5
- The result is the rem value: 1.5 rem
This works because rem units are relative to the root element’s font size, making scaling consistent across the page.
Conversion Example
- Convert 32 px to rem:
- 32 ÷ 16 = 2
- So, 32 px = 2 rem
- Convert 18 px to rem:
- 18 ÷ 16 = 1.125
- Therefore, 18 px = 1.125 rem
- Convert 48 px to rem:
- 48 ÷ 16 = 3
- Hence, 48 px = 3 rem
- Convert 10 px to rem:
- 10 ÷ 16 = 0.625
- So, 10 px = 0.625 rem
Conversion Chart
| Pixels (px) | Rem (rem) |
|---|---|
| -1.0 | -0.0625 |
| 0 | 0 |
| 1.0 | 0.0625 |
| 2.0 | 0.1250 |
| 3.0 | 0.1875 |
| 4.0 | 0.2500 |
| 5.0 | 0.3125 |
| 6.0 | 0.3750 |
| 7.0 | 0.4375 |
| 8.0 | 0.5000 |
| 9.0 | 0.5625 |
| 10.0 | 0.6250 |
| 11.0 | 0.6875 |
| 12.0 | 0.7500 |
| 13.0 | 0.8125 |
| 14.0 | 0.8750 |
| 15.0 | 0.9375 |
| 16.0 | 1.0000 |
| 17.0 | 1.0625 |
| 18.0 | 1.1250 |
| 19.0 | 1.1875 |
| 20.0 | 1.2500 |
| 21.0 | 1.3125 |
| 22.0 | 1.3750 |
| 23.0 | 1.4375 |
| 24.0 | 1.5000 |
| 25.0 | 1.5625 |
| 26.0 | 1.6250 |
| 27.0 | 1.6875 |
| 28.0 | 1.7500 |
| 29.0 | 1.8125 |
| 30.0 | 1.8750 |
| 31.0 | 1.9375 |
| 32.0 | 2.0000 |
| 33.0 | 2.0625 |
| 34.0 | 2.1250 |
| 35.0 | 2.1875 |
| 36.0 | 2.2500 |
| 37.0 | 2.3125 |
| 38.0 | 2.3750 |
| 39.0 | 2.4375 |
| 40.0 | 2.5000 |
| 41.0 | 2.5625 |
| 42.0 | 2.6250 |
| 43.0 | 2.6875 |
| 44.0 | 2.7500 |
| 45.0 | 2.8125 |
| 46.0 | 2.8750 |
| 47.0 | 2.9375 |
| 48.0 | 3.0000 |
| 49.0 | 3.0625 |
The chart shows px values in first column, and their rem equivalents in second column. To use it, find the pixel value you want, then read its rem value to apply in CSS or design settings.
Related Conversion Questions
- How many rem units does 24 px equal in CSS?
- What is the rem value for 24 pixels if root font size changes?
- Is 24 px always 1.5 rem on all browsers?
- How to convert 24 px margins to rem for responsive design?
- Can 24 px be converted to rem without knowing root font size?
- What happens if root font size is 20px instead of 16px for 24 px?
- How does 24 px convert to rem when using different base font sizes?
Conversion Definitions
px: A pixel (px) is a unit of measurement in digital screens representing a single point in a raster image or display. Pixels define fixed sizes, making them absolute units often used for precise layout control in web design and graphics.
rem: The rem unit stands for “root em” and is a relative length unit in CSS. It measures size in relation to the root element’s font size, enabling scalable and flexible layouts that adjust based on user settings or device defaults.
Conversion FAQs
Why do some browsers have different root font sizes affecting px to rem conversion?
Browsers can have user-configured default font sizes or accessibility settings that change the root font size from the standard 16px. When this root size changes, the rem values adjust accordingly, so a pixel value converted to rem may differ from browser to browser.
Can I use rem units instead of px for all design elements?
Rem units work well for text and scalable layouts, but for some UI elements requiring exact pixel precision, px might be preferred. Mixing both is common, depending on whether flexibility or fixed sizing is needed for parts of the design.
How do I find the root font size if it’s not 16px?
You can inspect the root element (<html>) styles in browser developer tools to check its font size. Sometimes CSS resets or frameworks change this value, which affects how rem units convert from pixels.
Does converting 24 px to rem improve website accessibility?
Using rem units allows text and elements to scale based on user preferences or zoom levels, which can improve accessibility. Fixed pixel sizes may not respond well to such changes, limiting readability for users with vision impairments.
Is it possible to convert rem back to px?
Yes, by multiplying the rem value by the root font size in pixels, you can convert rem units back to pixels. For example, 1.5 rem × 16 px = 24 px.