Aspect Ratio Calculator
Simplify ratios (GCD), compare decimals, and apply common presets — 16:9, 21:9, 4:3, 9:16, and more.
Your Screen
—
Detecting display…
Calculator
Lock:
16:9
Decimal: 1.7778
Common presets
Widescreen
Ultrawide
Classic
Square
Portrait / phone
Other