Math Calculators
Every calculator shows the answer and the method — so you learn while you solve.
Numbers & Fractions
Fraction CalculatorAdd, subtract, multiply & divide fractions with stepsDecimal to Fraction CalculatorType a decimal (like 0.375) and get the equivalent fraction in lowest terms, witFraction to Decimal CalculatorEnter a numerator and denominator (and an optional whole part) to get the decimaGreatest Common Factor (GCF) CalculatorEnter two or three whole numbers to get their greatest common factor (and least Mixed Fraction CalculatorWork with two mixed numbers in one step
Triangles & Geometry
Triangle Area CalculatorThree ways to get the areaTriangle Perimeter CalculatorEnter the three sidesRight Triangle Side & Angle CalculatorGive any two of: leg a, leg b, hypotenuse c, or angle A30-60-90 Triangle CalculatorEnter any one side of a 30-60-90 triangle and get the other two instantly from t45-45-90 Triangle CalculatorEnter a leg or the hypotenuse of a 45-45-90 triangle