Converters
Aspect Ratio Calculator
Screen ratios & proportional resize.
Original size
×16:91.778
Resize — enter a new width or height to keep the ratio
×
Target ratio (optional)overrides the ratio used above
Common presets
Preview
This free aspect ratio calculator finds the simplified ratio of any screen or image size — like 1920×1080 = 16:9 — and resizes dimensions while keeping that ratio locked. Type a new width or height and the other is computed for you. Handy presets cover common video, monitor and social formats. Everything is calculated in your browser.
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