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Ratio Calculator - Simplify & Scale Ratios

Free ratio calculator. Simplify ratios, scale them to a total, and divide amounts proportionally. Essential for cooking, mixing, and finance.

Simplify and scale ratios

Enter your values to see results

and click the "Calculate" button

Ratio Calculator

Simplify ratios to their lowest terms and divide totals proportionally. Useful for recipes, mixing, investments, and splitting amounts.

Part A = Total × (A / (A+B))

To divide 70 in ratio 3:4: Part A = 70 × 3/7 = 30, Part B = 70 × 4/7 = 40

How do I simplify a ratio?

Divide both numbers by their greatest common divisor (GCD). Example: 12:16 → divide by 4 → 3:4

What are common ratio uses?

Recipes (flour:water), mixing (paint, concrete), finance (investment allocation), aspect ratios (16:9 screens).

GCD/LCM Calculator

Find greatest common divisor

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