Arithmetic & Number Calculators

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

8 free tools

Exponentiation Calculator Free online exponentiation calculator. Compute base raised to exponent power (base^exponent) with high precision output. Log Calculator Free online logarithm calculator. Calculate base-b logarithms (log_b(x)) of any number with custom base selection instantly. Prime Number Checker Free online prime number checker and calculator. Test if any positive integer is a prime or composite number instantly. 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. Rounding Calculator Free online rounding calculator. Round numbers to the nearest integer, tenths, hundredths, tens, or hundreds with instant precision. Square Root Calculator Free online square root calculator. Calculate the square root of any positive number instantly with high precision. Ln Calculator Free online natural logarithm calculator. Calculate ln(x) with base e instantly with high mathematical accuracy.
Error Detection & Checksum Tools Calculate and verify parity bits, Hamming codes, and CRC checksums used for error detection and correction. Number Base Converters Convert numbers between binary, decimal, hexadecimal, octal, Gray code, and base 36. Trigonometry & Angle Calculators Calculate sine, cosine, tangent, and their inverses, convert angles between degrees, radians, arcminutes, arcseconds, milliradians, gradians, turns, and DMS, and solve circle arc, chord, and sector problems.