Aspect Ratio Tools
Four focused calculators that cover every aspect ratio job: identify the ratio of any size, simplify it to lowest terms, compare two shapes, and plan crops that keep the target ratio. All of them run in your browser - nothing is uploaded.
Aspect Ratio Calculator
Find a ratio from dimensions, or the missing dimension from a ratio
Ratio Simplifier
Reduce any ratio like 1920:1080 to lowest terms
Aspect Ratio Comparator
Are two ratios the same shape? By how much do they differ?
Crop Size Calculator
Largest centred crop of any target ratio inside your image
Common Aspect Ratios
Reference table: every common ratio, decimal and use
What Is Aspect Ratio?
The definition and how to read W:H