Ratio Calculator
Calculate and simplify ratios, find missing values in proportions, convert ratios to percentages, and compare ratios. Perfect for cooking, recipes, and math.
Example: 8:12 → 2:3
Enter values to see result
Quick Tips
• Simplify: 8:12 → 2:3 (÷4)
• Find X: 2:3 = X:9 → X=6
• To %: 3:5 → 37.5%:62.5%
• Compare: 2:3 = 4:6 ✓
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✨ Key Features
Simplify Ratios
Reduce ratios to their simplest form using GCD
Find Missing Values
Solve for unknown values in proportions easily
Convert to Percentage
Transform ratios into percentage representations
Compare Ratios
Check if two ratios are equal or different
How to Use the Ratio Calculator
Our ratio calculator helps you work with ratios in four different ways. Choose your calculation type from the tabs, enter your values, and get instant results. Perfect for cooking, math homework, recipe scaling, and everyday calculations.
Four Calculation Modes
1. Simplify Ratio: Reduce ratios to their simplest form (e.g., 8:12 → 2:3)
2. Find Missing Value: Solve proportions with unknown values (e.g., 2:3 = X:9 → X = 6)
3. Ratio to Percentage: Convert ratios to percentages (e.g., 3:5 → 37.5% : 62.5%)
4. Compare Ratios: Check if two ratios are equal (e.g., 2:3 vs 4:6 → Equal)
Common Uses
Cooking: Scale recipes up or down (2 eggs : 3 cups flour = X eggs : 9 cups flour)
Maps: Understand map scales (1:50,000 means 1cm = 50,000cm real distance)
Mixing: Dilute solutions or mix materials (1:10 bleach to water ratio)
Finance: Analyze financial ratios (debt-to-equity, current ratio)
Construction: Mix concrete or mortar (1:2:3 cement:sand:gravel)
Understanding Ratios
A ratio compares two or more quantities. Written as A:B, it shows how many times one value contains another. Ratios can be simplified like fractions - divide both sides by the same number. Equal ratios represent the same relationship (2:3 = 4:6 = 6:9).