All Math calculators32 calculators

Algebra, geometry & percentages

• Percentage CalculatorCalculate percentages three ways: what is X% of Y, X is what percent of Y, and Y increased or decreased by X%.
• Percentage Change CalculatorCalculate the percentage increase or decrease between two values, with the absolute difference and direction.
• Percentage Difference CalculatorFind the percentage difference between two values relative to their average — the symmetric comparison used in science and engineering.
• Discount CalculatorCalculate the sale price after a discount, how much you save, and the final price with sales tax included.
• Sales Tax CalculatorAdd sales tax to a price, or reverse-calculate the pre-tax price and tax amount from a tax-inclusive total.
• Circle Area & Circumference CalculatorCalculate the area, circumference, and diameter of a circle from its radius, in metric or imperial units.
• Triangle Area CalculatorCalculate the area of a triangle from its base and height, or all three sides using Heron's formula.
• Pythagorean Theorem CalculatorSolve the Pythagorean theorem a² + b² = c² — find the hypotenuse, a leg, or check if sides form a right triangle.
• Square Root CalculatorCalculate the square root, cube root, and nth root of any positive number, with decimal precision control.
• Exponent CalculatorRaise a base to any power — including negative and fractional exponents — and see scientific notation for huge results.
• Quadratic Equation CalculatorSolve ax² + bx + c = 0 instantly, including complex roots and the discriminant.
• Fraction CalculatorAdd, subtract, multiply or divide two fractions with simplified results.
• Distance CalculatorFind the distance between two points on a plane using their coordinates.
• Midpoint CalculatorFind the midpoint of the line segment joining two points.
• Slope CalculatorCompute the slope of the line through two points, with intercepts and angle.
• LCM & GCD CalculatorFind the least common multiple and greatest common divisor of two integers.
• Factorial CalculatorCompute n! exactly, with the number of trailing zeros and scientific notation.
• Ratio CalculatorSolve proportions and scale ratios — find the missing value in A : B = C : D.
• Weighted Average CalculatorAverage values with different weights — grades, portfolios, or survey scores.
• Cylinder Volume CalculatorCompute the volume of a cylinder from radius and height, plus surface area.
• Average Rate of Change CalculatorFind how fast a function changes between two points using the average rate of change.
• Antilog CalculatorUndo a logarithm: find the number whose log, in any base, equals your value.
• Fraction Addition & SubtractionAdd or subtract two fractions and get the simplified result plus the mixed number.
• Dice Probability CalculatorChance of rolling at least, exactly, or at most a target sum with up to six dice.
• Coin Flip Probability CalculatorOdds of getting your run of heads, tails, or a mix across any number of fair flips.
• Lottery Odds CalculatorExact jackpot odds for any pick-N lottery, with or without a bonus ball.
• Binary ↔ Hex ConverterConvert any number between binary, hexadecimal, octal, and decimal, with bit length and byte size shown for each result.
• Complex Number CalculatorAdd, subtract, multiply, or divide complex numbers, and convert the result between rectangular a + bi and polar r(cos θ + i sin θ) forms.
• Prime Number CheckerCheck whether a number is prime, get its smallest factor, see neighbouring primes and the gap between them, and count primes up to n.
• Regular Polygon Area CalculatorCompute the area, perimeter, and interior angles of any regular polygon from its side count and side length — triangle to megagon.
• Synthetic Division CalculatorDivide a polynomial by a linear factor using synthetic division — with the remainder check and the factored form when it divides evenly.
• Modulo CalculatorFind the remainder after division — with quotient, Euclidean and floored variants, and clock-arithmetic context for cyclic math.