Aspect Ratio Calculator

Calculate aspect ratios, find missing dimensions, and scale resolutions while preserving ratio.

Runs entirely in your browser — nothing is uploaded or stored on any server.

About Aspect Ratio Calculator

Updated Mar 2026

A versatile aspect ratio calculator with four modes: find height from width and ratio, find width from height and ratio, calculate the ratio for any resolution, and generate a scale table for common sizes. Reduces ratios to their simplest form (e.g. 16:9, 4:3) and identifies common named ratios.

Frequently Asked Questions

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