50 px equals approximately 3.125 rem in mobile units.
Table of Contents
This conversion assumes a base font size of 16 pixels, which is typical in mobile browsers. By dividing the pixel value by 16, you get the equivalent rem unit, making designs scalable and responsive on different mobile devices.
Conversion Tool
Result in mobile:
Conversion Formula
The formula to convert pixels (px) to mobile units (rem) is:
mobile = px / baseFontSize
Where baseFontSize is the root font size set by browsers, commonly 16px for mobile devices. Dividing px by 16 converts absolute pixels into relative rem units, allowing the design to scale dynamically with user settings or device differences.
Example with 50 px:
- Start with 50 px
- Divide 50 by 16 (50 ÷ 16)
- Result is 3.125 rem
Conversion Example
- Example 1: 32 px
- Take 32 px
- Divide by 16: 32 ÷ 16 = 2 rem
- The mobile equivalent is 2 rem
- Example 2: 48 px
- Start with 48 px
- 48 ÷ 16 = 3 rem
- So, 48 px equals 3 rem in mobile
- Example 3: 64 px
- Use 64 px
- Divide 64 by 16: 64 ÷ 16 = 4 rem
- Resulting mobile value is 4 rem
- Example 4: 20 px
- Take 20 px
- 20 ÷ 16 = 1.25 rem
- Equivalent mobile unit is 1.25 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 |
The chart shows px values on the left and their equivalent mobile rem units on the right. To use, find your px value and read across to see the rem value for responsive styling on mobile devices.
Related Conversion Questions
- How do I convert 50 pixels to rem for mobile design?
- What is the rem equivalent of 50 px on mobile screens?
- Why does 50 px equal 3.125 rem in mobile conversion?
- How to calculate mobile units from 50 px for responsive layouts?
- Is dividing by 16 always correct when converting 50 px to mobile?
- Can 50 px be converted to em or rem for mobile use?
- What base font size applies when converting 50 px to mobile rem?
Conversion Definitions
px: Px, short for pixels, is a unit of measurement in digital design representing a single point on a screen. Pixels are absolute units used to define fixed sizes in images, fonts, and layout elements, depending on screen resolution and display density.
mobile: Mobile units like rem are relative measurements used in responsive web design. Rem stands for “root em,” scaling depending on the root element’s font size, allowing layouts and fonts to adjust proportionally across different mobile devices and user settings.
Conversion FAQs
Why do we divide pixels by 16 to get rem on mobile?
The number 16 is the default root font size in most mobile browsers. Rem units are relative to this root size, so dividing px by 16 converts an absolute pixel value into a relative rem unit that respects user scaling and device differences.
Can the base font size be different than 16px?
Yes, the base font size can be set differently in CSS, but 16px is standard for most browsers. If a different base size is used, the conversion formula px/baseFontSize must adjust accordingly to maintain correct scaling.
Is rem better than px for mobile design?
Rem units provide better scalability and accessibility, adapting to user preferences and device settings. Pixels are fixed and might not scale well on different screen sizes or resolutions, making rem preferable for responsive mobile design.
Does converting 50 px to rem affect image sizes?
Rem units mainly apply to font sizes and layout dimensions, not images directly. However, using rem for container sizes can indirectly affect image scaling within responsive layouts, ensuring consistency across devices.
What happens if a user changes default font size on their mobile?
When users adjust their mobile device’s font size, rem-based elements scale accordingly because rem depends on the root font size. Pixel-based sizes remain fixed, which can cause layout issues or poor readability if not using relative units.