Aspect Ratio Calculator
Lock any two of width, height, or ratio and the calculator fills in the rest. Browse common ratios (1:1, 16:9, 9:16, golden, cinema), preview crop or letterbox results, and copy modern CSS, Tailwind, or padding-hack output.
Ratio
16:9 (16:9)
Decimal
1.778
Category
Landscape
Calculator
Lock any two fields and the third updates live. Results round to the nearest pixel.
px
Auto
px
Enter a width and a ratio — height is computed and rounded.
Live preview
Scaled to fit — colors change with ratio category (square, landscape, portrait, cinema, panoramic).
1920 × 1080
Pixels
16:9
Ratio
1.778
Decimal