4 pt equals 5.3333 px.
Converting points (pt) to pixels (px) requires multiplying the point value by 1.3333 because 1 pt is defined as 1/72 of an inch and 1 px is typically 1/96 of an inch. So, 4 pt is converted by multiplying 4 by 1.3333, resulting in approximately 5.3333 px.
Conversion Tool
Result in px:
Conversion Formula
The formula to convert points (pt) to pixels (px) is:
px = pt × 1.3333
Points are based on a physical measurement where 1 point equals 1/72 of an inch. Pixels depend on screen resolution, typically 96 pixels per inch. To convert, we adjust the point measurement to pixels by multiplying by the ratio of pixels per inch to points per inch (96/72 = 1.3333).
Example calculation:
- Given 4 pt
- Multiply by 1.3333 → 4 × 1.3333 = 5.3332 px
- Rounded to four decimals: 5.3333 px
Conversion Example
- Convert 10 pt to px:
- Multiply 10 by 1.3333
- 10 × 1.3333 = 13.333 px
- Result: 13.333 px
- Convert 2.5 pt to px:
- 2.5 × 1.3333 = 3.3333 px
- Result: 3.3333 px
- Convert 7 pt to px:
- 7 × 1.3333 = 9.3331 px
- Result: 9.3331 px
- Convert 0 pt to px:
- 0 × 1.3333 = 0 px
- Result: 0 px
- Convert 15 pt to px:
- 15 × 1.3333 = 19.9995 px
- Result: 20.0000 px (rounded)
Conversion Chart
| pt | px | pt | px | pt | px |
|---|---|---|---|---|---|
| -21.0 | -28.0000 | 0.0 | 0.0000 | 21.0 | 28.0000 |
| -18.0 | -24.0000 | 3.0 | 4.0000 | 24.0 | 32.0000 |
| -15.0 | -20.0000 | 6.0 | 8.0000 | 27.0 | 36.0000 |
| -12.0 | -16.0000 | 9.0 | 12.0000 | 29.0 | 38.6667 |
| -9.0 | -12.0000 | 12.0 | 16.0000 | ||
| -6.0 | -8.0000 | 15.0 | 20.0000 | ||
| -3.0 | -4.0000 | 18.0 | 24.0000 |
This chart shows point values in the left columns and their equivalent pixel values on the right. Negative and positive values included, so you can see how pt converts across a range. Use the chart by finding your pt value, then reading across to find px.
Related Conversion Questions
- How many pixels do 4 points convert to in CSS?
- What is the pixel equivalent of 4 pt for screen display?
- Is 4 pt bigger or smaller than 5 px?
- How to change 4 pt font size to pixels in HTML?
- Does 4 pt equal 5 px exactly or approximately?
- What is the formula to convert 4 pt to px?
- How do different screen resolutions affect 4 pt to pixel conversion?
Conversion Definitions
pt (point): A unit of length used in typography, mainly for font sizes and print layout. One point equals 1/72 of an inch. Points provide a fixed measurement independent from screen resolution, allowing consistent physical sizing across devices.
px (pixel): The smallest visible unit on a digital screen, representing a single point of color. Pixel size varies depending on screen resolution and device density, making pixel measurements relative rather than absolute in physical dimensions.
Conversion FAQs
Why do we multiply points by 1.3333 to get pixels?
Because points are defined as 1/72 inch and pixels are usually 1/96 inch, the ratio of pixels per inch to points per inch is 96/72 = 1.3333. Multiplying by this factor converts the physical measurement in points to the screen-dependent pixel measurement.
Can the pt to px conversion change on different devices?
Yes, since pixels depend on screen resolution and device pixel density. While the formula uses standard 96 PPI screens, devices with higher or lower pixel density will render the same point size with different pixel counts, affecting how sharp or large text appears.
Is 4 pt always equal to 5.3333 px in web design?
Not always. The 5.3333 px value assumes a standard 96 PPI screen. If the display or browser uses a different pixel density, the actual rendered size may differ. Some browsers may also round pixel values causing slight variations.
How do negative pt values convert to pixels?
Negative pt values convert the same way by multiplying by 1.3333, resulting in negative pixel values. While negative sizes don’t have practical display meaning, mathematically the conversion is consistent.
Why is the conversion factor 1.3333 and not a whole number?
The factor comes from the ratio between two different physical measurement standards: 72 points per inch and 96 pixels per inch. Because these standards are different, the factor is a fraction, not a whole number.