50 em equals 800 pixels (px) when the base font size is 16 pixels.
The conversion from em to px depends on the current font size set in the browser or stylesheet. Since 1 em equals the current font size, multiplying 50 em by 16 px (the default font size) gives the pixel equivalent. This means 50 em is 50 times 16 px, resulting in 800 px.
Conversion Tool
Result in px:
Conversion Formula
The formula to convert em units to pixels is:
pixels = em × base font size
This works because the em unit is relative to the font size currently applied to the element or inherited. For most browsers, the default base font size is 16 pixels unless changed by CSS or user settings.
Example calculation:
- Given 50 em and base font size 16 px
- Multiply: 50 × 16 = 800
- So, 50 em equals 800 pixels
Conversion Example
- Convert 12 em to px:
- Base font size is 16 px
- Multiply 12 × 16 = 192
- Result is 192 px
- Convert 5.5 em to px:
- Base font size 16 px
- 5.5 × 16 = 88
- So 5.5 em equals 88 px
- Convert 30 em to px:
- 30 × 16 = 480 px
- This is 30 em times 16 px
- Convert 1 em to px:
- 1 × 16 = 16 px
- 1 em equals the base font size
Conversion Chart
| Em | Pixels (px) |
|---|---|
| 25.0 | 400 |
| 30.0 | 480 |
| 35.0 | 560 |
| 40.0 | 640 |
| 45.0 | 720 |
| 50.0 | 800 |
| 55.0 | 880 |
| 60.0 | 960 |
| 65.0 | 1040 |
| 70.0 | 1120 |
| 75.0 | 1200 |
The chart shows em values on left and corresponding pixels on right, assuming a 16 px base font size. To use, find the em value your need and read across to see pixel equivalent for easier styling or layout decisions.
Related Conversion Questions
- How many pixels are in 50 em with a different base font size?
- What px value do I get if I change 50 em to pixels on mobile devices?
- Can 50 em be converted to px if the font size isn’t 16 pixels?
- Is 50 em always equal to 800 px or does it vary?
- How to calculate px from 50 em in CSS with custom font settings?
- What impact does zoom level have on converting 50 em to pixels?
- How do browsers compute pixels when I specify 50 em in styles?
Conversion Definitions
em: A relative unit in CSS representing the computed font size of the element. If no font size is set, it inherits from the parent, making 1 em equal to the font size in pixels. It scales with typography, useful for responsive designs, and flexible sizing based on text.
px: An absolute unit representing one pixel on the screen. Pixels are fixed units, unaffected by font size or user settings. It is used for precise control of layout and element sizes, but less flexible for responsive or scalable typography compared to relative units like em.
Conversion FAQs
Does the base font size always have to be 16 pixels when converting em to px?
No, the base font size can change depending on CSS styles or browser settings. Although 16 pixels is the default for most browsers, if the font size is modified in CSS (like 20 px or 14 px), 1 em will correspond to that new size, affecting the em to px conversion.
What happens if I use 50 em inside an element with a different font size?
The 50 em will multiply by the font size of that particular element, not the root or default font size. For example, if the element’s font size is 12 px, 50 em equals 600 pixels. This can cause unexpected sizes if not accounted for.
Are pixels always more precise than em units for layout design?
Pixels provide exact, fixed sizes which can be good for precise layouts. But em units scale relative to font size, making designs more flexible and accessible. Depending on needs, em units might offer better responsiveness, but pixels give consistent sizing across devices.
Can zooming in a browser affect the pixel value of 50 em?
Zooming changes how content is rendered visually, but the computed pixel value from em conversion remains the same in code. However, visually, the size may appear larger or smaller, because zoom scales the whole page rendering, not the actual CSS units.
Why might converting 50 em to pixels give different results in different browsers?
Different browsers or user settings could change the base font size or apply minimum font size restrictions. If the base font size differs from 16 px, the conversion will yield different pixel values for the same em amount.
Last Updated : 24 June, 2025
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Sandeep Bhandari holds a Bachelor of Engineering in Computers from Thapar University (2006). He has 20 years of experience in the technology field. He has a keen interest in various technical fields, including database systems, computer networks, and programming. You can read more about him on his bio page.