Aspect Ratio Calculator

Calculate aspect ratios online. Find width, height or ratio from any two values. Common presets for video, photo and screen resolutions.

Dimensions

Width

Height

Ratio

16:9

Decimal

1.7778

Dimensions

1920 x 1080

Common Ratios

Shape Preview

16:9 (1920 x 1080)

Pixel Dimensions for 16:9

Width	Height	Pixels
320	180	57.600
640	360	230.400
768	432	331.776
1024	576	589.824
1280	720	921.600
1920	1080	2.073.600

About Aspect Ratios

An aspect ratio describes the proportional relationship between width and height. It is commonly expressed as two numbers separated by a colon (e.g. 16:9). Aspect ratios are used throughout design, photography, video and web development to maintain consistent proportions when scaling content. This calculator finds the simplified ratio, generates dimension tables and lets you lock the ratio while resizing. All calculations happen in your browser.

Aspect Ratios Explained: A Guide for Developers and Designers

Learn what aspect ratios are, common ratios for video and images, how to calculate them, the CSS aspect-ratio property, responsive design considerations and social media image sizes.