1.6 rem equals 25.6 pixels (px).
The conversion from rem to pixels depends on the root font size set by the browser or CSS, which is commonly 16 pixels. Multiplying 1.6 by 16 gives 25.6 pixels, because 1 rem corresponds to the root element’s font size.
Conversion Tool
Result in px:
Conversion Formula
The formula to convert rem to pixels is:
pixels = rem × root font size
Since the root font size is normally 16 pixels in most browsers, multiply the rem value by 16. This works because rem units are relative to the root element’s font size, so 1 rem equals the root font size in pixels.
Example calculation for 1.6 rem:
- Start with the rem value: 1.6
- Multiply by root font size: 1.6 × 16
- Result: 25.6 pixels
Conversion Example
- 2.5 rem to px:
- 2.5 × 16 = 40 pixels
- Multiply rem by 16 to get pixel value
- 0.75 rem to px:
- 0.75 × 16 = 12 pixels
- Decimal rem values work the same way
- 3 rem to px:
- 3 × 16 = 48 pixels
- Simply multiply the rem value by 16
- 5 rem to px:
- 5 × 16 = 80 pixels
- Scaling up the rem value increases the pixel size
Conversion Chart
The chart below shows rem values from -23.4 to 26.6 converted into pixels, by multiplying each rem by 16. Use it to quickly find pixel equivalents for rem values within this range.
| rem | px |
|---|---|
| -23.4 | -374.4 |
| -20.0 | -320 |
| -15.5 | -248 |
| -10.0 | -160 |
| -5.0 | -80 |
| -1.0 | -16 |
| 0 | 0 |
| 1.0 | 16 |
| 2.5 | 40 |
| 5.0 | 80 |
| 10.0 | 160 |
| 15.0 | 240 |
| 20.0 | 320 |
| 26.6 | 425.6 |
Related Conversion Questions
- How many pixels equal 1.6 rem in CSS?
- What is the pixel size of 1.6 rem if root font size changes?
- Can 1.6 rem be converted to pixels for different devices?
- Why does 1.6 rem equal 25.6 pixels in most browsers?
- How to calculate pixels from 1.6 rem when root font size is not 16px?
- Is the conversion from 1.6 rem to px always fixed at 25.6?
- How does browser zoom affect 1.6 rem to px conversion?
Conversion Definitions
rem: A CSS unit stands for “root em”, which measures font sizes relative to the root element’s font size. If the root font size is 16px, then 1 rem equals 16 pixels. It scales consistently across a webpage, making layouts flexible and easier to maintain.
px: Pixels are absolute units representing a single dot on a computer screen or device display. They provide precise control over element sizes, colors, and layout, but lack flexibility when user settings or resolutions change, unlike relative units such as rem or em.
Conversion FAQs
Does the root font size always have to be 16 pixels for rem to px conversion?
No, the root font size can be changed using CSS on the html element. If the root font size changes, the rem unit scales accordingly. For example, if root font size is 20px, then 1 rem equals 20 pixels, so converting 1.6 rem would be 32 pixels instead of 25.6.
Why might the pixel value from rem conversion look different on various devices?
Different devices have different screen resolutions and pixel densities, which affects how many physical pixels a CSS pixel covers. Also, user browser settings like zoom or default font size can alter the root font size, changing the pixel value of rem units.
Can rem units be negative and what happens then?
Yes, rem units can be negative, but they generally used for positioning or offsets, not font sizes. Negative rem values converted to pixels follow the same multiplication rule, resulting in negative pixel values, which can move elements opposite directions on the page.
Is there a performance impact when using rem instead of px?
Using rem units has no significant performance impact on rendering compared to px. However, rem units improve accessibility and scalability by adapting to user preferences or root font size changes, making layouts more flexible without additional computation cost.
How do I convert rem to px if the root font size is set in a different unit like em or %?
If the root font size itself is set using relative units like em or percentages, first convert that root size to pixels by resolving the chain of relative sizes up to a fixed pixel value. After obtaining the root font size in pixels, multiply the rem value by it to get pixels.
