Quadratic Formula Calculator
Use the free online Quadratic Formula Calculator tool. Fast, private and easy to use — runs entirely in your browser. Part of our Math Calculators collection.
Circle Area Calculator
Find the area, circumference and diameter of a circle from its radius using A = πr².
Pythagorean Theorem Calculator
Solve any missing side of a right triangle with a² + b² = c². Enter two sides and get the third.
Quadratic Formula Calculator
Solve ax² + bx + c = 0 with the quadratic formula, including the discriminant and complex roots.
Fraction Simplifier
Reduce any fraction to lowest terms, see it as a mixed number and as a decimal.
GCF & LCM Calculator
Find the greatest common factor and least common multiple of two whole numbers instantly.
Percentage Change Calculator
Work out the percentage increase or decrease between two values, plus the absolute difference.
Slope Calculator
Get the slope, line equation and distance between two points on a graph.
Circumference Calculator
Find the circumference and area of a circle from its radius or diameter with C = πd.
Exponent Calculator
Raise any number to any power, including negative and fractional exponents.
Logarithm Calculator
Compute the logarithm of any number in any base, with natural log and log base 10 included.
Factorial Calculator
Calculate n! exactly for small numbers and in scientific notation up to 170!.
Ratio Simplifier
Simplify any ratio to lowest terms and see its 1 : n form — decimals supported.