Image Resolution Calculator
Calculate megapixels from dimensions and vice versa
Quick Conversions
About Image Resolution
Image resolution is measured in pixels (width × height) or megapixels (millions of pixels). A 4000×3000 image is 12 megapixels. Camera specifications, print requirements, and screen displays all reference resolution differently.
Our calculator converts between dimensions and megapixels, and can compute dimensions from megapixels given an aspect ratio (16:9, 4:3, 3:2, etc.).