Aspect Ratio Calculator

Calculate aspect ratios for images, videos, and screens with this easy-to-use tool. Enter any width and height to instantly see the simplified aspect ratio, decimal ratio, total pixels, and megapixels. Use the lock ratio feature to resize dimensions while maintaining proportions.

Key Features

• Instant aspect ratio calculation with simplified format (e.g., 16:9)
• Lock ratio mode to maintain proportions while resizing
• Common preset buttons for popular aspect ratios
• Visual preview showing proportional representation
• Pixel count and megapixel calculations
• Common resolution suggestions based on your ratio

Common Aspect Ratios

16:9 is the standard for HD displays and YouTube videos. 4:3 is the traditional TV and presentation format. 1:1 is the square format popular on Instagram. 21:9 is ultrawide cinema format. 9:16 is vertical video for mobile and Stories. 3:2 is common in photography and DSLR sensors.