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Aspect Ratio Calculator
Simplify display ratios, apply presets, or compute a missing width or height from a ratio.
Mode
Dimensions
Presets
Simplified ratio
16:9
Width to height (decimal): 1.777778
About This Tool
Enter width and height to get a reduced ratio (for example 1920 by 1080 to 16 to 9) plus a decimal width-to-height value. Switch to ratio mode to fix one side when you know the other and the ratio. Includes one-click presets for 16 to 9, 4 to 3, 1 to 1, 21 to 9, and 9 to 16.