Math Calculators
From a simple four-function calculator to step-by-step solutions — fast, accurate and free, on any device.
Equation SolverFree equation solver for linear (ax + b = c) and quadratic (ax² + bx + c = 0) equations. Shows the discriminant, real or complex roots, the vertex and every step.4 Function CalculatorA clean, fast 4 function calculator: add, subtract, multiply and divide with percent, memory and keyboard support. Free basic calculator that works on any device.Square Roots on CalculatorFind square roots instantly, simplify radicals (√72 = 6√2), check perfect squares and get cube roots and squares — plus how to do square roots on any calculator.Math Calculator With StepsType any arithmetic expression and see every step of the order of operations (PEMDAS): parentheses, exponents, multiplication/division and addition/subtraction.Binomial Distribution CalculatorCompute binomial probabilities: exactly x, at most, fewer than, at least and more than x successes in n trials, plus the mean and standard deviation.Science Calculator (Scientific Calculator)Free online scientific calculator with trig (deg/rad), inverse trig, logs, powers, roots, factorial, π, e, parentheses and answer history. Works with your keyboard.Inverse Tangent CalculatorCalculate the inverse tangent (arctan, tan⁻¹) of a value in degrees and radians, or find a full 0–360° angle from opposite and adjacent sides with atan2.Ten Key CalculatorOnline ten key calculator that works like an adding machine: enter amounts with your numpad, keep a running total and a printable tape. Great for 10-key practice.How to Put a Fraction in a CalculatorLearn how to enter fractions on a regular, phone or TI-84 calculator — and use our fraction calculator to add, subtract, multiply and divide fractions and mixed numbers.