Math

15 free math calculators. No signup required.

Find what score you need on your final exam, or calculate your current weighted grade.

Free scientific calculator with trigonometry, logarithms, exponents, square roots, factorials, and DEG/RAD mode.

Calculate your semester or cumulative GPA by entering course grades and credit hours.

A simple, reliable calculator for everyday math.

Find percentages, calculate what percent one number is of another, or get percentage change.

Calculate the percentage increase or decrease between any two values.

Calculate mean, median, mode, min, max, and sum for any set of numbers.

Add, subtract, multiply, and divide fractions. Results shown as simplified fractions and decimals.

Convert numbers between binary, octal, decimal, and hexadecimal. Type in any field to convert all.

Calculate triangle area, perimeter, angles, and side lengths. Supports right triangles, Heron's formula, and the law of cosines.

Find the Least Common Multiple (LCM) and Greatest Common Factor (GCF) of two or more numbers instantly.

Solve any quadratic equation ax² + bx + c = 0. Shows discriminant, both roots (real or complex), and step-by-step solution.

Calculate basic probability, combinations (nCr), and permutations (nPr) with step-by-step results.

Calculate mean, variance, and standard deviation (population and sample) for any dataset.

Solve for a missing value in a proportion, simplify a ratio, or scale a ratio by any factor.