Math Calculators

Solve everyday math problems instantly, including square roots, logarithms, exponents, factorials, Fibonacci numbers, rounding, and prime checks.

Rounding Calculator Free online rounding calculator. Round numbers to the nearest integer, tenths, hundredths, tens, or hundreds with instant precision. Factorial Calculator Free online factorial calculator. Compute the factorial (n!) of any non-negative integer with instant real-time calculation. Fibonacci Calculator Free online Fibonacci calculator. Compute the nth Fibonacci number from 0 to 99 instantly with exact sequence values. Radians To Degrees Free online radians to degrees converter. Convert angle measurements from radians to degrees with formula and conversion table. Prime Number Checker Free online prime number checker and calculator. Test if any positive integer is a prime or composite number instantly. Square Root Calculator Free online square root calculator. Calculate the square root of any positive number instantly with high precision. Log Calculator Free online logarithm calculator. Calculate base-b logarithms (log_b(x)) of any number with custom base selection instantly. Ln Calculator Free online natural logarithm calculator. Calculate ln(x) with base e instantly with high mathematical accuracy.