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Ratio Calculator

Simplify, scale, and solve ratios. Find aspect ratios, pixel dimensions, and resize images proportionally.

About this tool

Six ratio modes covering the most common design and development needs. Simplify reduces any ratio to its lowest terms. Pixel Dimensions and Image Resize are useful for responsive design and image optimisation. Aspect Ratio Finder works backwards from any two dimensions. All modes include common aspect ratio and device presets.