Calculate dimensions for resizing images and videos while maintaining perfect proportions.
Whether you are a graphic designer, a video editor, or a web developer, maintaining the correct aspect ratio is vital for visual quality. Our Image Aspect Ratio Calculator is a precision tool designed to help you scale dimensions without distortion. No more "stretched" faces or "squashed" landscapes—just perfect proportions every time.
Aspect ratio is the proportional relationship between the width and height of an image or screen. For example, a 16:9 ratio means that for every 16 units of width, there are 9 units of height. This is the standard for modern televisions and YouTube videos. Using a 16:9 calculator ensures that when you resize a 4K video to 1080p or 720p, the image remains crisp and correctly framed.
Using our tool is simple. First, enter your Base Dimensions. This could be the original size of your photo (e.g., 4000x3000) or a standard ratio (e.g., 16x9). Next, enter your New Dimensions. If you know you want your image to be 800 pixels wide, type "800" into the New Width field, and the calculator will instantly provide the correct height to maintain the original look.
Just as our Image Resizer helps you change file sizes, this calculator ensures your design integrity remains intact during the planning phase.
Different platforms require different shapes. Use our tool to hit these targets:
To find the height: (Width / 16) * 9. To find the width: (Height / 9) * 16. Our calculator automates this math for you instantly.
1920x1080 is the standard High Definition (HD) resolution, which has an aspect ratio of 16:9.
No, this is a mathematical calculator to find the correct dimensions. To resize an actual image file, please use our dedicated Image Resizer tool.