Education & Math Tools

Calculate a weighted GPA on a 4.0 scale from letter grades and credit hours. Free, instant.

Calculate percentages three ways: X% of Y, X is what % of Y, and percent change. Free, instant.

Solve ax² + bx + c = 0 for real or complex roots instantly. Free, instant.

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

Simplify a fraction to its lowest terms and see its decimal equivalent. Free, instant.

Convert numbers between standard and scientific notation instantly. Free, instant.

Generate APA and MLA formatted citations from author, title, and source details. Free, instant.

Calculate a z-score and percentile from a value, mean, and standard deviation. Free, instant.

Calculate nCr combinations and nPr permutations. Free, instant.

Calculate basic probability, plus AND/OR combinations of two events. Free, instant.

Calculate a weighted average grade from multiple assignment scores and weights. Free, instant.

Calculate long division with step-by-step work shown. Free, instant.

Check whether a number is prime and see its prime factorization. Free, instant.

Calculate the least common multiple of a list of numbers. Free, instant.

Calculate the greatest common factor of a list of numbers. Free, instant.

Add, subtract, multiply 2x2 or 3x3 matrices, or find a determinant. Free, instant.

Calculate slope and line equation from two points. Free, instant.

Calculate distance and midpoint between two coordinate points. Free, instant.

Solve for a right triangle's hypotenuse or a leg using the Pythagorean theorem. Free, instant.

Calculate a number raised to a power, including negative and fractional exponents. Free, instant.

Calculate a logarithm with any base using the change-of-base formula. Free, instant.

Round a number to a specified number of significant figures. Free, instant.

Calculate n! (factorial) exactly, even for large numbers. Free, instant.