Aspect Ratio Calculator
Calculate aspect ratios for your artwork. Find matching canvas sizes, compare to common ratios like 16:9 and 4:3.
Everything you need in a aspect ratio calculator.
Enter width and height — get ratio, simplified form, and orientation (landscape, portrait, or square).
See how your dimensions compare to 1:1, 4:3, 3:2, 16:9, 5:4, golden ratio, and more.
Enter a new width or height and instantly get the proportional matching dimension.
Input your image or canvas dimensions in pixels, mm, or inches.
See the aspect ratio and find the closest standard match.
Calculate matching sizes for any new dimension while preserving proportions.