Math & Scientific Calculators

Free, accurate math tools for students, engineers, and everyday problem-solving.

• Statistics CalculatorCalculate mean, median, mode, standard deviation, variance, and more from any dataset.
• Scientific CalculatorEvaluate expressions with sin, cos, tan, logs, powers, roots, and factorials in degrees or radians.
• Percentage CalculatorFind what percent X is of Y, calculate percentage change, or find X% of any number.
• Fractions CalculatorAdd, subtract, multiply, and divide fractions with fully simplified results and mixed numbers.
• Quadratic Equation SolverSolve ax² + bx + c = 0 instantly — get real roots, discriminant, and step-by-step display.