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Ratio Calculator
Simplify ratios and solve proportions like 2:3 = 10:x, for recipes, aspect ratios and scale drawings.
Tip from Tink: Great for resizing images: keep 16:9 by solving for the new height.
Simplified
16 : 9
16:9 = 1920:x → x
1,080
As decimal
1.7778
Use it for recipes, aspect ratios, map scales or mixing ratios.
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How to use the Ratio Calculator
- Enter the ratio A:B.
- Enter a new A to scale it.
- Read the simplified ratio and the missing number.
Everything runs in your browser. Nothing you enter is uploaded.