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Percentage Calculator
Find percentages, percentage change, and percentage values.
Open calculatorMath Calculators
Work with fractions, statistics, equations, number theory, probability, powers, and conversions.
From arithmetic to probability
21 calculators
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Basic Math
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Fraction Calculator
Add, subtract, multiply, or divide fractions and see every simplification step.
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Ratio Calculator
Simplify, scale, divide, solve, and compare two- or three-part ratios.
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Average Calculator
Find arithmetic, weighted, geometric, or harmonic averages with supporting statistics.
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Median Calculator
Find the median, quartiles, halves, and interquartile range of a data set.
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Percentage Difference Calculator
Compare two values symmetrically using their average magnitude.
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Rounding Calculator
Round by decimal places, significant figures, place value, floor, ceiling, or truncation.
Open calculatorNumber Theory
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LCM Calculator
Find the least common multiple of two or more integers with pairwise steps.
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GCD / HCF Calculator
Find the GCD or HCF with Euclidean steps and Bézout coefficients for two values.
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Prime Number Calculator
Check primality, list a range, find neighboring primes, or factor an integer.
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Factor Calculator
List factors, factor pairs, prime factors, divisor count, and divisor sum.
Open calculatorPowers and Logarithms
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Square Root Calculator
Calculate square or nth roots, simplified radicals, and nearby perfect powers.
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Exponent Calculator
Calculate integer, negative, and fractional powers with scientific notation.
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Logarithm Calculator
Calculate common, natural, binary, custom-base logs, and antilogarithms.
Open calculatorStatistics and Probability
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Standard Deviation Calculator
Calculate population or sample variance and standard deviation with a full deviation table.
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Probability Calculator
Solve event, conditional, permutation, combination, and binomial probabilities.
Open calculatorEquations
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Quadratic Equation Calculator
Find real or complex roots, vertex, axis, and a responsive parabola graph.
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Decimal to Fraction Calculator
Convert terminating or approximate decimals into reduced fractions and mixed numbers.
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Fraction to Decimal Calculator
Convert a fraction to decimal and identify terminating or recurring behavior.
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Scientific Calculator
Evaluate safe scientific expressions with precedence, functions, memory, and DEG/RAD modes.
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Random Number Generator
Generate integers, decimals, unique values, shuffled lists, or random selections.
Open calculatorAbout math calculators
Use browser-based tools for fractions, statistics, probability, equations, number theory, and conversions.