Print Size from Megapixels
Calculate maximum print size from camera megapixels at different DPI (150, 300). Aspect ratio considerations.
DPI Guide
300 DPI: Professional print quality. Magazines, fine art prints, close viewing.
200 DPI: Good quality. Standard photo prints, books, brochures.
150 DPI: Acceptable quality. Posters, larger prints viewed from distance.
72 DPI: Screen resolution only. Billboards and very large banners.
More Math & Data tools at toool.cc