Aspect Ratio Converter
Simplify an aspect ratio and scale width/height while keeping proportions.
Ratio Preview
—
Scale while preserving proportions (perfect for images, videos, UI).
Popular ratios
Base ratio
Enter any width and height pair.
Scale to target
Choose which side stays fixed.
Optional (leave empty to only simplify).
Scaled size: —
Simplified ratio
—
Scale factor
—
Scaled size
—
Tip: If your ratio uses large numbers (e.g. 3840×2160), this tool simplifies to the smallest equivalent ratio (e.g. 16:9).
Result—
Example: 1920×1080 → 16:9
Formula
Scale factor = Target ÷ Locked side