Calculate aspect ratio from width and height in pixels. or calculate the missing width or height for any ratio. Aspect Ratio Calculator: Calculate aspect ratios and dimensions. Image Resizer: Resize an image to specific pixel dimensions while preserving its proportions. Image Cropper: Crop an image to a specific ratio, such as 1:1 or 16:9, when you need a particular composition. Video Aspect Ratio Calculator: Work out suitable dimensions for video formats such as 16:9 and 9:16.