Math

Calculate percentages instantly. What is X% of Y? X is what percent of Y? And more.

Add, subtract, multiply, and divide fractions. Automatically simplifies results.

Calculate mean, median, mode, range, variance, and standard deviation from a data set.

Convert numbers to Roman numerals and Roman numerals back to numbers.

Calculate the Greatest Common Divisor and Least Common Multiple of two or more numbers with prime factorization.

Solve ax² + bx + c = 0. Shows real and complex roots, discriminant, vertex, and parabola properties.

Find any side of a right triangle using a² + b² = c². Shows angles, area, and perimeter.

Check if a number is prime, find its prime factors, or generate all primes up to any limit.

Full scientific calculator with trig, log, powers, roots, factorial, π, e, and calculation history.