Math · Free Online Tool
Ratio Calculator
Simplify, scale, and solve proportions A:B = C:D with part-to-part and part-to-whole conversion breakdowns.
Presets:
Term A
Term B
Ready for Calculation
Adjust parameters on the left and click Calculate or press Enter.
Frequently Asked Questions
Math · Related Calculators & Tools
Fraction Calculator
Add, subtract, multiply, divide, and simplify fractions with step-by-step common denominators and mixed numbers.
Percentage Calculator
Solve percentage increases, decreases, differences, fractions to percents, and reverse percentage calculations.
Scientific Calculator
Evaluate complex arithmetic, trigonometry, logarithms, exponentials, and powers with live formula rendering.
Triangle Calculator
Solve sides, angles, area, and perimeter of right and oblique triangles using SOHCAHTOA and the Law of Cosines.