Mathematics Tools

Calculate percentages: X% of Y, what percent X is of Y, and percentage increase or decrease.

Add, subtract, multiply and divide fractions with step-by-step simplified results.

Reduce fractions to their simplest form, with the GCD and mixed-number representation shown.

Solve quadratic equations ax² + bx + c = 0 with real and complex roots, discriminant and steps.

Find the greatest common divisor (GCD/HCF) of two or more numbers with the Euclidean algorithm.

Find the least common multiple (LCM) of two or more numbers instantly.

Check if a number is prime and see the nearest primes and divisors if it is not.

Break any number down into its prime factors, shown in exponent form.

Calculate the factorial (n!) of any number, with exact big-integer results for large n.

A free online scientific calculator with trigonometry, logarithms, powers, roots and memory.

Calculate mean, median, mode, range, variance and standard deviation from a list of numbers.

Calculate the average (mean) of a list of numbers, plus sum, count, min and max.

Calculate nCr and nPr - the number of combinations and permutations of n items taken r at a time.

Calculate logarithms with any base: log base 10, natural log (ln), log base 2 or custom.

Calculate powers and exponents (x^y) including negative and fractional exponents.

Calculate square roots, cube roots and nth roots of any number.

Simplify ratios and solve proportions: find the missing value in A:B = C:D.

Find the missing side of a right triangle using the Pythagorean theorem, with steps.

Calculate a circle's area, circumference, diameter or radius from any one known value.

Calculate the slope, distance, midpoint and line equation from two points.

Calculate the area of common shapes: rectangle, triangle, circle, trapezoid, ellipse and more.