How to Convert Pixels to Inches
One division does the whole job: inches = pixels ÷ PPI. The only decision you have to make is which pixel density applies.
Type in either field — the other one follows instantly.
The formula
To go from pixels to inches, divide by the density: inches = pixels ÷ PPI. To go the other way, multiply: pixels = inches × PPI.
For other units, convert to inches first and scale: centimetres are inches × 2.54, millimetres are inches × 25.4, and points are inches × 72.
Worked with the values in the calculator above
inches = 1,920 px ÷ 96 PPI = 20 in
pixels = 20 in × 96 PPI = 1,920 px Step by step
Three steps, in this order:
- Decide the density. 96 PPI for screen work, 300 DPI for print, 150 DPI for posters.
- Divide the pixel value by that number. 1920 ÷ 96 = 20 inches.
- Convert to another unit if you need one. 20 inches × 2.54 = 50.8 cm.
Worked examples
1920 px at 96 PPI — 1920 ÷ 96 = 20 inches, or 50.8 cm. This is how wide a Full HD image appears on a standard desktop screen.
1920 px at 300 DPI — 1920 ÷ 300 = 6.4 inches, or 16.26 cm. The same file, printed at photo quality.
2550 px at 300 DPI — 2550 ÷ 300 = 8.5 inches, exactly the width of a US Letter page.
Frequently asked questions
What is the pixels to inches formula?
inches = pixels ÷ PPI. Reversed, pixels = inches × PPI.
How do I convert pixels to inches in Photoshop?
Open Image then Image Size, untick Resample, and set the resolution field. The inch dimensions update without altering a single pixel.
How do I convert px to inches by hand?
Divide the pixel count by the density. At 96 PPI, divide by 96; at 300 DPI, divide by 300.
What if I do not know the DPI?
Use 96 for anything destined for a screen and 300 for anything going to print. If you are measuring a display, calculate its real density from the resolution and diagonal.