48+ free calculators and tools for students, professionals, and the mathematically curious. No downloads, no signup.
Browse All ToolsCalculate percentages, percentage change, and percentage difference.
Add, subtract, multiply, and divide fractions with step-by-step solutions.
Calculate mean, median, mode, and range of a number set.
Find the Greatest Common Factor and Least Common Multiple of two or more numbers.
Full scientific calculator with trigonometric, logarithmic, and exponential functions.
Solve ratio problems and find equivalent ratios.
Generate random numbers within a custom range with optional duplicates control.
Convert between binary, octal, decimal, and hexadecimal.
Solve any quadratic equation and find roots using the quadratic formula.
Solve linear equations in one or two variables.
Add, subtract, multiply polynomials and evaluate at a point.
Solve systems of 2 or 3 linear equations simultaneously.