Aspect Ratio Calculator
Calculate the simplified aspect ratio of any width and height, or solve for a missing dimension.
16:9Decimal ratio: 1.7778
Common reference ratios
- 16:9 (widescreen video)
- 4:3 (standard/classic)
- 21:9 (ultrawide)
- 1:1 (square)
- 3:2 (photography)
- 9:16 (vertical/mobile)