Calculate dimensions from aspect ratios — 16:9, 4:3, 1:1, and more.
Calculate width or height from a given aspect ratio instantly. Enter any two dimensions to get the third, or pick from common presets like 16:9, 4:3, 1:1, 21:9, and 3:2. Useful for video, design, and responsive layouts.
Generate custom placeholder images with any size, color, and text.