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AiTechWorlds
AiTechWorlds
Simplify a width/height ratio and calculate the missing dimension to preserve it at a new size.
Simplified ratio
16:9 (1.7778)
800 × 450
100% in-browser — simplifies a width/height pair to its ratio and calculates the missing dimension needed to preserve that ratio at a new size. All math runs locally, no data leaves your device.
Aspect Ratio Calculator simplifies a width/height pair to its lowest-terms ratio (e.g. 1920×1080 → 16:9) and calculates the missing dimension needed to resize an image or video to a new width or height while preserving that exact ratio.
Enter the original width and height
Gets simplified to a ratio automatically.
Lock width or height
Whichever dimension you're targeting.
Enter the target value
The other dimension calculates automatically.
100% Private — No Server Required
All processing happens directly in your browser. No data is uploaded, stored, or transmitted to any server.
Last reviewed on July 24, 2026 by the AiTechWorlds Tools Team. All processing runs locally in your browser.
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