50 px is equal to 3.125 rem in mobile units.
The conversion from pixels (px) to mobile units like rem depends on the root font size of the device or browser, which is generally 16 pixels. By dividing the pixel value by 16, you get the equivalent rem value used in mobile design for scalable and responsive layouts.
Conversion Tool
Result in mobile:
Conversion Formula
The formula to convert px to mobile rem units is:
rem = px / rootFontSize
Where rootFontSize is usually 16 pixels, the default font size of most browsers. This means the number of pixels is divided by 16 to get rem value.
This works because rem units scale relative to the root font size, allowing mobile designs to be flexible and adaptive. Using rem instead of px helps text and elements resize better on different devices.
Example calculation for 50 px:
- Take pixel value: 50 px
- Divide by root font size: 50 / 16
- Result: 3.125 rem
Conversion Example
- Convert 32 px to rem:
- Start with 32 px
- Divide 32 by 16
- 32 / 16 = 2 rem
- So, 32 px equals 2 rem in mobile units
- Convert 75 px to rem:
- Start with 75 px
- Divide 75 by 16
- 75 / 16 = 4.6875 rem
- This means 75 px equals 4.6875 rem
- Convert 16 px to rem:
- 16 px divided by 16
- 16 / 16 = 1 rem
- Therefore, 16 px is exactly 1 rem
- Convert 24 px to rem:
- 24 divided by 16
- 24 / 16 = 1.5 rem
- So, 24 px equals 1.5 rem
Conversion Chart
| Pixels (px) | Mobile (rem) |
|---|---|
| 25.0 | 1.5625 |
| 30.0 | 1.8750 |
| 35.0 | 2.1875 |
| 40.0 | 2.5000 |
| 45.0 | 2.8125 |
| 50.0 | 3.1250 |
| 55.0 | 3.4375 |
| 60.0 | 3.7500 |
| 65.0 | 4.0625 |
| 70.0 | 4.3750 |
| 75.0 | 4.6875 |
Use this chart to quickly find rem equivalents of pixel values between 25 and 75 px. Find your pixel value on left, then read across right column for mobile rem value. This helps in faster responsive design without calculation.
Related Conversion Questions
- How many rem units is 50 px equal to on mobile devices?
- What is the best way to convert 50 pixels into mobile-friendly units?
- Is 50 px the same as 3.125 rem for mobile styling?
- How does 50 px translate to rem in responsive mobile design?
- Can I use 50 px directly on mobile or should I convert to rem?
- What formula is used to convert 50 px into mobile units?
- Why does 50 px equal 3.125 rem on mobile screens?
Conversion Definitions
px (Pixel): A pixel is the smallest unit of a digital image or display, representing a single point in a raster image. Pixels measure screen resolution and size, commonly used in web design to specify fixed dimensions, but they don’t scale automatically across different devices.
mobile (rem unit): In mobile web design, rem stands for “root em” and is a scalable unit relative to the root font size of the document. It allows elements to resize consistently across screens, improving accessibility and responsive layouts by avoiding fixed pixel sizes.
Conversion FAQs
Why should I use rem instead of px for mobile design?
Using rem units allows your design to scale based on the root font size, which can change with user settings or device defaults. This makes text and UI elements adapt better on different screen sizes and resolutions, improving readability and usability on mobile devices compared to fixed px values.
What happens if the root font size is not 16 pixels?
If the root font size differs, the conversion changes accordingly. For example, if it is 20 pixels, 50 px would convert to 2.5 rem instead of 3.125. Always check the root font size set in CSS or browser defaults to get accurate rem values.
Can I directly use px values in CSS for mobile layouts?
While you can use px values, they often don’t scale well on mobiles with different screen densities or user settings. Using relative units like rem provides flexibility and better responsiveness, making your site more accessible and easier to maintain across devices.
Is there a performance difference when using rem vs px?
No, the browser rendering performance is not impacted noticeably by using rem or px units. The choice affects scalability and responsiveness, not speed. Rem units simply provide more flexible layouts for different screen sizes without requiring extra scripts or styles.
How do I find out the root font size on a mobile browser?
You can inspect the root font size by checking the html or body element styles in browser developer tools. It’s often set to 16px by default unless overridden by CSS or user preferences, so verifying it ensures correct px to rem conversions.