Math Calculators

Percentage Calculator

Calculate percentages in three ways: what is X% of Y, X is what % of Y, and percentage change between two values.

Fraction Calculator

Add, subtract, multiply, and divide fractions and mixed numbers. Shows step-by-step solutions and simplifies results automatically.

Standard Deviation Calculator

Calculate mean, variance, standard deviation, and other statistics from a data set. Supports both population and sample calculations.

Random Number Generator

Generate random numbers within a custom range. Generate single numbers or sets of unique random numbers for games, decisions, and sampling.

Triangle Calculator

Calculate all sides, angles, area, and perimeter of any triangle. Supports SSS, SAS, ASA, AAS, and right triangle inputs.

Volume Calculator

Calculate the volume of common 3D shapes: sphere, cylinder, cone, cube, rectangular prism, pyramid, and ellipsoid.

Area Calculator

Calculate the area of common 2D shapes: circle, rectangle, square, triangle, trapezoid, ellipse, parallelogram, and sector.

Percent Error Calculator

Calculate the percent error between an experimental/estimated value and the true/accepted value. Used in science and statistics.

Exponent Calculator

Calculate any base raised to any exponent, including negative and fractional exponents. Also calculates roots and logarithms.

Binary Calculator

Perform binary arithmetic: add, subtract, multiply, and divide binary numbers. Also converts between binary, decimal, hex, and octal.

Hex Calculator

Perform hexadecimal arithmetic and convert between hex, decimal, binary, and octal number systems.

Quadratic Formula Calculator

Solve any quadratic equation ax² + bx + c = 0 using the quadratic formula. Shows discriminant, roots, and step-by-step solution.

Slope Calculator

Calculate the slope, midpoint, distance, and equation of a line through two points. Also finds x and y intercepts.

Log Calculator

Calculate logarithms with any base, natural log (ln), log base 10, and antilogarithm. Essential for science, engineering, and math.

Sample Size Calculator

Calculate the required sample size for surveys and experiments based on population size, confidence level, and margin of error.

Probability Calculator

Calculate single event probability, conditional probability, and the probability of multiple events occurring together or separately.

Statistics Calculator

Comprehensive statistical analysis: mean, median, mode, range, variance, standard deviation, quartiles, IQR, and more.

Mean, Median, Mode Calculator

Calculate mean (average), median (middle value), mode (most frequent), and range from any set of numbers.

Permutation and Combination Calculator

Calculate permutations nPr and combinations nCr. Understand the difference between ordered and unordered selections.

Z-Score Calculator

Calculate the z-score (standard score) for a data point and find its percentile ranking in a normal distribution.

Confidence Interval Calculator

Calculate the confidence interval for a population mean or proportion. Used in hypothesis testing and survey analysis.

Ratio Calculator

Simplify ratios, find equivalent ratios, solve for missing values, and convert ratios to fractions, decimals, and percentages.

Distance Calculator

Calculate the distance between two points in 2D or 3D space using the Euclidean distance formula.

Circle Calculator

Calculate circle area, circumference, diameter, and radius from any one known measurement.

Surface Area Calculator

Calculate the surface area of 3D shapes: sphere, cylinder, cone, cube, rectangular box, and pyramid.

Pythagorean Theorem Calculator

Calculate the missing side of a right triangle using the Pythagorean theorem (a² + b² = c²). Find hypotenuse or leg length.

Right Triangle Calculator

Solve a right triangle given any two values. Calculate all sides, angles, area, and perimeter of a right triangle.

Root Calculator

Calculate square roots, cube roots, and nth roots of any number. Also solves for the radicand given a root value.

Least Common Multiple Calculator

Calculate the Least Common Multiple (LCM) and Greatest Common Factor (GCF) of two or more numbers. Shows prime factorization method.

Greatest Common Factor Calculator

Calculate the Greatest Common Factor (GCF) of two or more numbers using prime factorization or the Euclidean algorithm.

Factor Calculator

Find all factors of a number, factor pairs, and prime factorization. Determine if a number is prime or composite.

Rounding Calculator

Round numbers to any decimal place, significant figures, or nearest integer. Supports round up, round down, and round half options.

Matrix Calculator

Add, subtract, multiply, transpose, and find the determinant of matrices. Supports 2×2 and 3×3 matrices.

Scientific Notation Calculator

Convert numbers to and from scientific notation. Perform arithmetic operations on numbers in scientific notation.

Big Number Calculator

Perform arithmetic on very large numbers that exceed JavaScript's standard precision. Perfect for factorial, combinatorics, and cryptography.

Prime Factorization Calculator

Find the prime factorization of any number. Shows factor tree and exponential notation. Determine if a number is prime.

Long Division Calculator

Perform long division step-by-step with remainder. Shows the complete division process for learning and verification.

Average Calculator

Calculate the arithmetic mean, geometric mean, and harmonic mean of a set of numbers. Supports weighted averages.

P-Value Calculator

Calculate the p-value for z-scores and t-scores. Determine statistical significance for hypothesis tests.

Half-Life Calculator

Calculate the amount remaining after radioactive or exponential decay using the half-life formula. Used in nuclear physics, chemistry, and pharmacology.