How do I calculate a ratio?
Enter A, B, and C to solve A:B = C:D for D. 此頁面整合多種相關計算模式。
Tooloo · Math Toolkit
Ratio Tools
Calculate ratios and scales on one page.
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ƒ(x)D = B × C ÷ A
Is data uploaded?
No. Calculation runs in your browser.
Calculation limits
The first ratio value cannot be zero.
What is the ratio formula?
For A:B = C:D, D = B × C ÷ A.