All Calculators
Free online calculators and converters for school, work and everyday life.
General
Algebra and Equations
Quadratic Formula CalculatorSolve ax² + bx + c = 0 with steps
System of Equations CalculatorSolve two equations with two unknowns
Statistics and Probability
Mean, Median, Mode and Range CalculatorAverage, median, mode and range of a list
Permutation and Combination CalculatornPr and nCr, with and without repetition
Standard Deviation CalculatorPopulation and sample standard deviation
Number Theory
Factorial CalculatorExact factorials (n!) up to 500
GCF CalculatorGreatest common factor (GCD, HCF) with steps
LCM CalculatorLeast common multiple with prime factors
Binary, Decimal and Hex ConverterBinary, octal, decimal and hex converter
Prime Factorization CalculatorPrime factors, divisors and prime check
Geometry
Circle CalculatorArea, circumference, radius and diameter
Pythagorean Theorem CalculatorFind a missing side of a right triangle
Slope CalculatorSlope, line equation, distance and midpoint
Fractions and Percent
Percentage CalculatorX% of Y, what percent, percent change and discounts
Fraction CalculatorAdd, subtract, multiply and divide fractions
Decimal to Fraction CalculatorDecimals to fractions and back
Percent Change CalculatorPercentage increase and decrease
Square Root CalculatorSquare roots and simplified radicals
Finance
Loan CalculatorMonthly EMI and total interest
Compound Interest CalculatorSavings growth with monthly deposits
Discount CalculatorSale price, savings and discount percent
Mortgage CalculatorMonthly mortgage payment with tax and insurance
Simple Interest CalculatorInterest and total from principal, rate and time
Tip CalculatorTip and bill splitter