Use the free Aspect Ratio Calculator (ARC) to instantly convert width and height while keeping the correct proportions. Ideal for video, design, photography and web projects.
👋 Learn more about meLive Aspect Ratio Preview
The Aspect Ratio Calculator (ARC) makes it simple to convert width and height values while keeping the correct aspect ratio. Whether you’re working with video, images, or design layouts, just enter one dimension and the tool will automatically calculate the other. Popular formats like 16:9, 4:3, 1:1, and 21:9 ultrawide are fully supported.
Looking for more creative tools & resources? Visit my homepage.
What is an aspect ratio?
An aspect ratio is the proportional relationship between width and height. For example, 16:9 means the width is 16 units for every 9 units of height.
How do I calculate aspect ratio dimensions?
To calculate aspect ratio, divide the width by the height to get the ratio. This calculator automates the process — just enter one dimension and the tool gives you the other.
Why is 16:9 the most popular aspect ratio?
16:9 became the standard for HDTV, online video, and most monitors because it balances widescreen viewing with compatibility across devices.