Megapixel Calculator
Calculate megapixels from image dimensions and maximum print sizes.
Find your camera resolution and print quality limits.
Resolution Analysis
Megapixels (MP) = total number of pixels in an image, measured in millions.
Megapixels = (Width in pixels × Height in pixels) / 1,000,000
Maximum print size at quality DPI:
Max Print Width = Pixel Width / DPI
DPI guidelines for printing:
- 72 DPI: Screen display only
- 150 DPI: Acceptable for large prints viewed from distance
- 240 DPI: Good quality prints
- 300 DPI: Professional print quality (magazines, photos)
Common camera resolutions:
- 12 MP: 4000 × 3000 — prints up to 13" × 10" at 300 DPI
- 24 MP: 6000 × 4000 — prints up to 20" × 13" at 300 DPI
- 45 MP: 8192 × 5464 — prints up to 27" × 18" at 300 DPI
- 61 MP: 9504 × 6336 — prints up to 32" × 21" at 300 DPI
(1 inch = 2.54 cm)