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Ratio Calculator
Calculate ratios, proportions, and solve ratio problems with step-by-step solutions
Ratio Operations
Operation Mode
Simplify Ratio
Solve Proportion
Find Equivalent Ratios
Scale Ratio
First Value (A)
Second Value (B)
Ratio: 12 : 18
Calculate
Formulas
Simplified: A/GCD : B/GCD
Example Problems
Recipe scaling
2 : 3
Gear ratio
36 : 12
Map scale
1 : ? = 50000 : 1000000
Aspect ratio
1920 : 1080
Paint mixture
3 : 5
Results
Enter values and click Calculate to see results
Ratio Applications
Common Uses
• Recipe scaling
• Map scales
• Gear ratios
• Mixing solutions
• Financial ratios
Properties
• Order matters: a:b ≠ b:a
• Equivalent ratios are equal
• Can be simplified like fractions
• Cross multiplication for solving
Tips
• Always simplify when possible
• Check units are consistent
• Use cross multiplication
• Verify proportional relationships
Tips
Enter the dimensions in the same unit for consistency.
Results update automatically as you type.
Use the unit selector to convert between different measurement systems.