3 inches equals 360 pixels when assuming a resolution of 120 pixels per inch (PPI).
To convert inches to pixels, you multiply the length in inches by the pixel density (PPI). Here, using 120 PPI, 3 inches times 120 pixels per inch gives 360 pixels.
Conversion Tool
Result in pixels:
Conversion Formula
The formula to convert inches to pixels is:
Pixels = Inches × Pixels Per Inch (PPI)
Pixels per inch (PPI) is a measurement of pixel density, indicating how many pixels fit into one inch of a physical display or image. To convert inches to pixels, multiply the length in inches by the PPI.
For example, if the PPI is 120:
- Start with 3 inches.
- Multiply 3 by 120 (pixels per inch).
- 3 × 120 = 360 pixels.
This means 3 inches equals 360 pixels at 120 PPI.
Conversion Example
- Convert 5 inches to pixels:
- Identify PPI value, say 120.
- Multiply 5 by 120: 5 × 120 = 600 pixels.
- Therefore, 5 inches equals 600 pixels at 120 PPI.
- Convert 2.5 inches to pixels:
- Use PPI of 120.
- Calculate 2.5 × 120 = 300 pixels.
- So, 2.5 inches is 300 pixels.
- Convert 0.75 inches to pixels:
- PPI remains 120.
- 0.75 × 120 = 90 pixels.
- 0.75 inch corresponds to 90 pixels.
- Convert 10 inches to pixels:
- Multiply 10 × 120 = 1200 pixels.
- Therefore, 10 inches equals 1200 pixels.
Conversion Chart
| Inches | Pixels (at 120 PPI) |
|---|---|
| -22.0 | -2640 |
| -20.0 | -2400 |
| -18.0 | -2160 |
| -16.0 | -1920 |
| -14.0 | -1680 |
| -12.0 | -1440 |
| -10.0 | -1200 |
| -8.0 | -960 |
| -6.0 | -720 |
| -4.0 | -480 |
| -2.0 | -240 |
| 0.0 | 0 |
| 2.0 | 240 |
| 4.0 | 480 |
| 6.0 | 720 |
| 8.0 | 960 |
| 10.0 | 1200 |
| 12.0 | 1440 |
| 14.0 | 1680 |
| 16.0 | 1920 |
| 18.0 | 2160 |
| 20.0 | 2400 |
| 22.0 | 2640 |
| 24.0 | 2880 |
| 26.0 | 3120 |
| 28.0 | 3360 |
Use this chart to quickly find pixel values for inches between -22.0 and 28.0. Just find the inch value on the left column and read its pixel equivalent at 120 PPI on the right. Negative values indicate lengths in the opposite direction or negative measurement.
Related Conversion Questions
- How many pixels are in 3 inches on a 120 PPI screen?
- What is the pixel count for 3 inches at 150 PPI?
- Can 3 inches be converted to pixels without knowing PPI?
- How does screen resolution affect converting 3 inches to pixels?
- Is 360 pixels always equal to 3 inches?
- How to calculate pixels from 3 inches on a 72 PPI display?
- What is the difference in pixels when converting 3 inches at 96 PPI vs 120 PPI?
Conversion Definitions
Inches: An inch is a unit of length in the imperial system, equal to exactly 2.54 centimeters. It is commonly used in the United States and other countries for measuring length, height, and distance. The inch is subdivided into smaller units like fractions and decimals for precision.
Pixels: Pixels are the smallest units of a digital image or display, representing a single point of color. They combine to form images on screens. Pixel density, usually measured in pixels per inch (PPI), determines how sharp and detailed the image appears on a device.
Conversion FAQs
Why does the PPI value affect the conversion from inches to pixels?
The PPI indicates how many pixels fit in one inch on a screen or image. Without knowing the PPI, you can’t determine the exact pixel length from inches because different devices and images have different pixel densities. A higher PPI means more pixels per inch, so the same inch length converts to more pixels.
Can I convert inches to pixels if the image is printed?
Printed images use dots per inch (DPI), which is related but different from PPI. While pixels apply to digital displays, DPI measures ink dots in printing. Conversion between inches and pixels for print requires knowing the DPI and the intended print size, but direct pixel measurement applies primarily to digital contexts.
What happens if I use a wrong PPI value in the conversion?
Using an incorrect PPI causes the resulting pixel measurement to be inaccurate. For instance, assuming 120 PPI when the actual value is 96 PPI will give a pixel count that’s too high, leading to sizing issues in digital design or image rendering.
Are pixels always square when converting from inches?
Pixels are usually square, but some displays or images might have non-square pixels, causing distortion. The conversion assumes square pixels, so if pixels are rectangular, the conversion formula doesn’t perfectly represent physical dimensions.
Is there a standard PPI value for all screens?
No, screens vary widely in PPI. Older monitors might have 72 or 96 PPI, while modern smartphones or retina displays can have 300 PPI or more. Always check the device’s specifications to use the correct PPI for accurate conversions.