Please enter your width and height to calculate aspect ratio
Pick a ratio and enter either width or height - the other dimension is calculated automatically.
The aspect ratio of an image defines the proportion between its width and height. It is always expressed as two numbers separated by a colon (x:y). For example, images with the aspect ratio of 16:9, no matter how big or small, will always have the width of 16 and the height of 9 units of the same length. Therefore, 16 centimeters wide and 9 centimeters high image as well as 32 centimeters wide and 18 centimeters high image has the same 16:9 aspect ratio.
In order to find out the aspect ratio of an image or video, both width and height should be known in advance. If you already have these two measurements just insert them into the calculator above and aspect ratio will be calculated as a result. All calculations are being made automatically to assure efficiency, accuracy, and fluidity!
Additionally our aspect ratio calculator will provide the mode for you picture or video. It will be determined based on the measurements provided. Mode for the images or videos which are taller than it is wide will be "Portrait" and those with the bigger width than height will be "Landscape".
Please note that measurements should always include ONLY the size of the actual image or video, and NOT to include additional video player dimensions or picture frames / borders. Sometimes video players or image frames could add up to 20 – 30 pixels and as a result aspect ratio will not be as it truly is.
Check out our dedicated calculators for specific ratios: 16:9 (HD), 4:3 (SD), 21:9 (Ultrawide), 5:4 (Print), 1:1 (Square), 3:2 (DSLR), 9:16 (Vertical), 2:1 (Univisium), and 32:9 (Super Ultrawide). New to aspect ratios? Read our beginner's guide to aspect ratios, or use our visual ratio comparison tool to see how different ratios compare. Need platform-specific sizes? Check our guides for YouTube, Instagram, TikTok, Facebook, Twitter/X, LinkedIn, and Pinterest, Snapchat, and Twitch, and Discord. Working from home? See our video conferencing aspect ratios guide for Zoom, Teams, and Meet specs. Or see every platform's dimensions at once with our social media image sizes cheat sheet. Preparing images for print? Use our pixel density (PPI/DPI) calculator to find the right dimensions. Curious about cinema? Our film & cinema aspect ratios guide covers everything from Academy 4:3 to CinemaScope 2.39:1 and IMAX. Photographers should check our photography & print aspect ratios guide for sensor ratios, standard print sizes, and cropping tips.