Aspect Ratio Calculator
Calculate image or video dimensions and scale proportions accurately while maintaining the correct aspect ratio.
What is an Aspect Ratio?
An aspect ratio is the proportional relationship between an image or video's width and its height, typically expressed as two numbers separated by a colon (such as 16:9 or 4:3). Maintaining the correct ratio ensures that media scales properly without stretching, squishing, or distorting visuals.
How to Use the Aspect Ratio Calculator
- Enter your starting dimensions in the Original Width and Original Height fields to determine the base ratio.
- Modify either the New Width or New Height to automatically calculate the matching proportional dimension.
- View the simplified aspect ratio instantly in the results panel.
Common Screen and Media Ratios
Standard widescreen monitors and high-definition video utilize 16:9, traditional television formats use 4:3, cinema screens often use 21:9 or 2.39:1, and vertical smartphone content relies heavily on 9:16 proportions.