12 tools
Average Calculator
Find the mean of any list of numbers, plus the sum, count, minimum and maximum.
Exponent Calculator
Raise any base to any power with this exponent calculator, supporting negative, fractional and decimal exponents.
Factorial Calculator
Calculate the factorial n! of any non-negative integer, the product of all whole numbers from 1 up to n.
Fraction Calculator
Add, subtract, multiply or divide two fractions and get the simplified result plus its decimal value instantly.
GCD & LCM Calculator
Find the greatest common divisor (GCD/HCF) and least common multiple (LCM) of a list of integers using the Euclidean algorithm.
Logarithm Calculator
Compute the logarithm of any positive number in any base, plus the natural log (ln) and common log (log₁₀).
Percentage Calculator
Work out percentages fast: X% of Y, what percent one number is of another, and percentage change.
Prime Number Checker
Check whether any integer is prime and see its prime factorization using fast trial division up to the square root.
Ratio Calculator
Solve proportions of the form a:b = c:d for the missing value, and simplify any ratio to its lowest terms.
Root Calculator
Find the square root, cube root or any nth root of a number, including real odd roots of negative values.
Rounding Calculator
Round any number to a chosen number of decimal places or to the nearest 10, 100 or 1000, with floor and ceiling values.
Scientific Notation Calculator
Convert decimal numbers to scientific notation and back, showing the mantissa, exponent and standard form.