Table of Contents
How to Find Your DPI
DPI relates to the resolution of your screen. Most commonly, screens have a DPI value of 75. Here are resources for you to find, or calculate, the DPI of your device.
List of DPI values by device: DPI Love
- DPI Love has a compiled a searchable list of devices and their DPI values. Go here first.
How to Calculate Your Screen's DPI
If you did not see your device listed in DPI Love's table, then you can take the manual approach. Take a measuring tape against your screen to determine the width of the red line below in inches. Then, use the chart beneath the red line to convert that number into DPI. Most screens have a DPI of 75.
| Measurement | Screen DPI |
|---|---|
| 3" | 100 DPI |
| 3.25" | 92 DPI |
| 3.5" | 85 DPI |
| 3.75" | 80 DPI |
| 4" | 75 DPI |
| 4.25" | 70 DPI |
| 4.5" | 66 DPI |
| 4.75" | 63 DPI |
| 4.25" | 60 DPI |
What is DPI?
DPI, which stands for dots-per-inch, is a measure used in printing to calculate the number of dots that can fit into a line with a width of one inch. In computer terms, we use pixels instead of dots. So, what we're really seeking to understand here is pixels-per-inch (PPI).
About the Formulas
Converting Pixels to Inches
If you know the pixel width and height of your image, our calculator will convert those dimensions into its display size in inches. This can be useful to know when printing a physical copy of the image or displaying it on a larger screen.
Formula: Pixels / DPI = Inches
Converting Inches to Pixels
Whereas converting pixels to inches can be helpful in outputting a digital image to a physical image, converting inches to pixels can help you bring a physical image into digital form.
Formula: Inches x DPI = Pixels
Congrats! You've successfully converted pixels to inches. For more awesome image compression and optimization tools, check out our best image optimization plugins for WordPress.
