Aspect Ratio Calculator

This calculator helps you convert between different resolutions while keeping the same ratio, such as converting 1920×1080 (16:9) to a smaller or larger size without stretching or squishing the image. It’s perfect for photographers, graphic designers, video editors, and anyone working with digital media.

An aspect ratio is the ratio of width to height, expressed as two numbers separated by a colon, like 4:3 or 16:9. This tool can calculate missing width or height, simplify ratios, or convert them to new dimensions while preserving proportions.

Why use this Proportion Calculator:

Accurate with nearly any size numbers – Works with both very large and very small values.

Localized number display – Set your preferred decimal and thousands separators.

Readable results – Convert numbers into words for clarity.

History tracking – Access your past calculations anytime.

Mobile-optimized input – Easy typing with smart keypad layouts.