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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)


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