Aspect Ratio Calculator
Type a size to see the simplified ratio and decimal, or lock a ratio and calculate the matching width or height. A live frame shows the proportions.
Runs 100% in your browser · nothing you enter is uploaded
How to use it
- Enter width and height to find the ratio.
- Or pick a ratio and type one side to solve the other.
- Use presets for common social formats.
Questions
Why does 1366×768 show an odd ratio?
Some sizes don’t reduce to a neat ratio. We also show the nearest common ratio.
Does it round?
Solved sides are rounded to the nearest whole pixel.
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