Mathematics Calculators
Basic math, algebra, geometry, statistics, percentages, and number conversions.
Percentage Calculator
Calculate percentages, percentage change, and percentage of a number instantly.
Percentage Increase Calculator
Calculate the percentage growth or increase from an initial value to a final value.
Percentage Decrease Calculator
Calculate the percentage reduction or decrease from an initial value to a lower value.
Percentage Difference Calculator
Calculate the relative percentage difference between two numbers when neither is a baseline.
Percentage Change Calculator
Calculate the percentage change (increase or decrease) between an old value and a new value.
Ratio Calculator
Solve ratio scales, scale up or down ratios, and find missing ratio terms A:B = C:D.
Ratio Simplifier Calculator
Simplify ratios to their lowest whole number terms using the greatest common divisor.
Proportion Calculator
Solve direct and inverse proportions to find missing variable values.
Average Calculator
Calculate the arithmetic mean, sum, count, and statistical summary of a dataset.
Weighted Average Calculator
Calculate the weighted mean of data values with varying relative weights or importance.
Median Calculator
Find the exact middle number of a sorted set of numbers.
Mode Calculator
Find the most frequently occurring value or values in a set of numbers.
Range Calculator
Calculate the statistical range, minimum value, and maximum value of a dataset.
Fraction Calculator
Add, subtract, multiply, and divide proper, improper, and mixed fractions.
Fraction Simplifier Calculator
Reduce fractions to their simplest lowest terms and mixed number format.
Decimal to Fraction Calculator
Convert terminating or repeating decimals into exact simplified fractions.
Fraction to Decimal Calculator
Convert fractions and mixed numbers into exact decimal values and percentages.
LCM Calculator (Least Common Multiple)
Find the least common multiple (LCM) of two or more numbers.
GCD Calculator (Greatest Common Divisor)
Calculate the greatest common divisor (GCD) or highest common factor (HCF) of numbers.
Prime Number Checker
Check whether a number is prime or composite and list its divisors.
Prime Factorization Calculator
Decompose any integer into its unique prime factor product tree.
Exponent Calculator
Calculate powers, exponents, base raised to power x^y, and scientific exponentiation.
Square Root Calculator
Calculate principal square roots sqrt(x) and nth roots of positive numbers.
Cube Root Calculator
Calculate real cube roots cbrt(x) for positive and negative numbers.
Scientific Notation Calculator
Convert numbers into standard scientific notation (a * 10^b) and engineering notation.
Rounding Calculator
Round numbers to nearest integer, decimal place, significant figures, or nearest fraction.
Random Number Generator
Generate uniform random integers or decimals within a custom minimum and maximum range.
Probability Calculator
Calculate single event probability, compound event probability, and odds ratios.
Permutation Calculator
Calculate nPr permutations where item order matters.
Combination Calculator
Calculate nCr combinations where item order does not matter.