30 pt is equal to 40 pixels.
The conversion from points (pt) to pixels (px) depends on the display resolution, where 1 point is equivalent to 1/72 of an inch. Using the standard screen resolution of 96 pixels per inch, 30 points converts to 40 pixels by multiplying 30 by 96 divided by 72.
Conversion Tool
Result in pixel:
Conversion Formula
The formula to convert points to pixels is:
pixels = points × (pixels per inch) / (points per inch)
Because 1 point equals 1/72 inch, and the screen resolution is set at 96 pixels per inch, the formula becomes:
pixels = points × 96 / 72
This works, because pixels measure screen dots, and points measure print size, so converting requires adjusting by their inch equivalents. The ratio 96/72 simplifies to 4/3.
For example, converting 30 points:
- Multiply 30 by 96: 30 × 96 = 2880
- Divide 2880 by 72: 2880 ÷ 72 = 40
- The result is 40 pixels
Conversion Example
- 12 pt to pixel
- Calculate 12 × 96 = 1152
- Divide 1152 by 72 = 16
- 12 pt converts to 16 pixels
- 18 pt to pixel
- Multiply 18 × 96 = 1728
- Divide 1728 by 72 = 24
- 18 pt equals 24 pixels
- 24 pt to pixel
- 24 × 96 = 2304
- 2304 ÷ 72 = 32
- 24 points become 32 pixels
- 48 pt to pixel
- 48 × 96 = 4608
- 4608 ÷ 72 = 64
- 48 pt converts to 64 pixels
Conversion Chart
This chart shows the pixel values corresponding to point values between 5.0 and 55.0. Use it by finding the point value in the first column, then reading across to see the pixel equivalent. This helps quick conversions without calculation.
| Points (pt) | Pixels (px) |
|---|---|
| 5.0 | 6.67 |
| 10.0 | 13.33 |
| 15.0 | 20.00 |
| 20.0 | 26.67 |
| 25.0 | 33.33 |
| 30.0 | 40.00 |
| 35.0 | 46.67 |
| 40.0 | 53.33 |
| 45.0 | 60.00 |
| 50.0 | 66.67 |
| 55.0 | 73.33 |
Related Conversion Questions
- How many pixels are in 30 points on a 96 dpi screen?
- What is the pixel equivalent of 30 pt for web design?
- Does converting 30 pt to pixels change on different devices?
- Why does 30 pt equal 40 pixels, not 30 pixels?
- How to convert 30 pt font size to pixels manually?
- Is 30 pt font size bigger than 40 pixels on screen?
- What formula should I use to convert 30 pt to px for CSS?
Conversion Definitions
pt (point): A point is a unit of length used in typography and printing, equal to 1/72 of an inch. It defines font sizes and spacing in print media. Points are absolute units, meaning their size does not change regardless of screen or device resolution, making it useful for physical measurements.
pixel: A pixel is the smallest unit of a digital image or display, representing a single point of color on a screen. Pixels are relative to screen resolution, so their physical size varies with different devices. Pixels form the basis of digital graphics and screen display measurements.
Conversion FAQs
Why does the conversion from pt to pixel depend on screen resolution?
Because a point measures a physical length (1/72 inch), converting to pixels requires knowing how many pixels fit into an inch on the screen. Different screens have different pixel densities, so the same point value can correspond to different pixel counts depending on resolution.
Can I use the same pt to pixel conversion on mobile devices?
Not exactly, mobile devices often have higher or varying pixel densities (DPI), so 1 pt might equal more pixels than on a standard 96 DPI screen. For precise sizing across devices, using relative CSS units or media queries is better.
Is the 96 DPI standard for all screens?
No, 96 DPI is a convention used mainly in Windows and web design. Many modern screens have higher DPI values, causing pixels to be smaller and the conversion from points to pixels to vary if DPI is different.
What happens if I use incorrect DPI in the conversion?
If the DPI value is wrong, the pixel size will be off. For example, assuming 96 DPI on a 144 DPI screen will make text appear smaller than expected. Accurate DPI is crucial for exact pixel calculations from points.
How to convert pixels back to points?
To convert pixels to points, use the inverse formula: points = pixels × 72 / pixels per inch. For 96 DPI, points = pixels × 72 / 96 which simplifies to pixels × 0.75.