Math Calculators

Free interactive calculators that show their work. Every calculation includes a step-by-step breakdown.

Popular Calculators

Scientific Calculator

Free online scientific calculator with step-by-step solutions. Supports trig, logarithms, exponents, and more. Perfect for GED, SAT, and college math.

Percentage Calculator

Free percentage calculator with step-by-step solutions. Calculate percent of a number, what percent one number is of another, and percent change.

Fraction Calculator

Free fraction calculator with step-by-step solutions. Add, subtract, multiply, divide, and simplify fractions instantly.

Equation Solver

Free linear equation solver with step-by-step solutions. Solve equations in the form ax + b = c or ax + b = cx + d.

Slope Calculator

Free slope calculator — find the slope of a line from two points or an equation, with step-by-step solutions.

Volume Calculator

Free volume calculator for prisms, cylinders, cones, spheres, pyramids, and hemispheres with step-by-step solutions.

Browse by Category

Arithmetic

Percentage, fraction, and unit conversion calculators for everyday math.

3 calculators

Algebra

Equation solvers, slope tools, and expression simplifiers for algebra problems.

2 calculators

Geometry

Area, volume, surface area, and triangle calculators for spatial math.

5 calculators

Statistics

Standard deviation, probability, regression, and hypothesis testing calculators.

7 calculators

General

GPA, scientific, graphing, and other general-purpose math tools.

1 calculator