Math Calculators

Add, subtract, multiply, divide, simplify, and convert fractions.

Simplify, scale, split, and convert ratios to or from percentages.

Find mean, median, mode, minimum, maximum, range, and count from a list.

Calculate mean, population variance, sample variance, and standard deviation.

Find the greatest common divisor and least common multiple of two or more integers.

Find prime factors, exponent notation, and whether a number is prime.

Convert common length, mass, temperature, and volume units.

Calculate rectangle, triangle, circle, trapezoid, and parallelogram area.

Calculate cube, rectangular prism, cylinder, cone, and sphere volume.

Calculate surface area for cubes, boxes, cylinders, spheres, and cones.

Calculate density, mass, or volume from the other two values.

Calculate speed, distance, or time with common distance and time units.

Calculate absolute error and percentage error from exact and measured values.

Convert numbers to scientific notation, normal notation, and engineering notation.

Calculate a mod b, quotient, and remainder with a clear division explanation.

Solve ax^2 + bx + c = 0 with discriminant, real roots, and optional complex roots.