Aspect Ratio Calculator - Image & Video Ratio Tool
Calculate the aspect ratio of any width × height. Scale images and videos to new dimensions while maintaining the ratio.
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Original Dimensions
×
Decimal Ratio
1.7778
width ÷ height
Scale to New Size
Common Aspect Ratios
iAbout Aspect Ratio
Calculate the simplified aspect ratio (e.g., 16:9) from any pixel dimensions, then use the scale calculator to find the exact new width or height while maintaining the ratio. Includes presets for common screen sizes, social media formats, and video resolutions.
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?Frequently Asked Questions
What is aspect ratio?
Aspect ratio is the proportional relationship between width and height, expressed as W:H (e.g., 16:9 for HD video, 1:1 for square images).
How do I scale an image without distortion?
Enter the original dimensions, then use the Scale calculator — type the new width and it calculates the correct height, or vice versa.