33 free tools
Math calculators
Solve percentages, ratios, fractions, averages, and scientific expressions. Every tool includes its formula, an example, and instant private results.
Percentage Calculator
Quickly find what a given percentage of any number equals.
Open calculatorPercentage Change Calculator
Measure the percentage increase or decrease between an original and a new value.
Open calculatorFraction Calculator
Add, subtract, multiply, or divide two fractions and receive a simplified answer.
Open calculatorAverage Calculator
Find the arithmetic mean, sum, count, minimum, and maximum of a list of numbers.
Open calculatorRatio Calculator
Simplify a two-number ratio to its lowest whole-number form.
Open calculatorScientific Calculator
Evaluate common arithmetic, powers, roots, trigonometry, and logarithms with a safe on-page expression tool.
Open calculatorExponent Calculator
Raise any number to a positive, negative, or fractional power.
Open calculatorSquare Root Calculator
Find the square root of any non-negative number instantly.
Open calculatorCube Root Calculator
Find the cube root of positive or negative numbers.
Open calculatorLogarithm Calculator
Compute logarithms in any base for growth and scale problems.
Open calculatorFactorial Calculator
Calculate factorials for counting and probability problems.
Open calculatorGCD Calculator
Find the greatest common divisor of two or more integers.
Open calculatorLCM Calculator
Find the least common multiple for scheduling and fraction problems.
Open calculatorPrime Number Calculator
Check whether a number is prime and explain why.
Open calculatorPrime Factorization Calculator
Break a whole number into its prime factors.
Open calculatorMatrix Calculator
Add, multiply, or analyze matrices for linear algebra work.
Open calculatorDeterminant Calculator
Compute the determinant of a square matrix.
Open calculatorQuadratic Formula Calculator
Solve quadratic equations and show both real roots.
Open calculatorEquation Solver
Solve common algebraic equations from the expression you enter.
Open calculatorGraphing Calculator
Plot a function over a custom x-range to visualize behavior.
Open calculatorHex Calculator
Convert numbers between hexadecimal and decimal formats.
Open calculatorBinary Calculator
Convert numbers between binary and decimal formats.
Open calculatorDecimal Calculator
Convert between decimal and other numeric bases quickly.
Open calculatorScientific Notation Calculator
Convert numbers into scientific notation and back.
Open calculatorStandard Deviation Calculator
Measure spread in a data set with standard deviation.
Open calculatorVariance Calculator
Calculate statistical variance for a list of values.
Open calculatorMean Calculator
Find the arithmetic average of any list of numbers.
Open calculatorMedian Calculator
Find the middle value in a sorted data set.
Open calculatorMode Calculator
Find the most frequent value in a list of numbers.
Open calculatorProbability Calculator
Compute probability from favorable and total outcomes.
Open calculatorPermutation Calculator
Count ordered arrangements when order matters.
Open calculatorCombination Calculator
Count unordered selections when order does not matter.
Open calculatorRandom Number Generator
Generate random random number values for testing, games, or security.
Open calculatorAbout our math calculators
CalculatorDepot tools are designed for quick estimates and learning. Inputs stay in your browser, and each page describes the equation behind its result. Check important decisions with a qualified professional when individual circumstances, regulations, or fees matter.