Free Online Math
5 free tools — advanced math tools — primes, factorials, GCD, and more
Advanced math tools for students, engineers, and anyone who needs to crunch numbers. Perform complex scientific calculations, work with binary arithmetic and bitwise operations, check prime numbers and find factors, compute GCD and LCM, and calculate factorials, permutations, and combinations. Each tool provides clear results with step-by-step computation breakdowns so you can understand the math behind the answer. All processing happens in your browser — no data is sent to any server.
All Math (5)
Scientific Calculator
Full-featured scientific calculator with trigonometry, logarithms, exponents, and memory functions
Binary Calculator
Perform addition, subtraction, multiplication, and bitwise operations on binary numbers with decimal conversion
Prime Number Checker
Check if any number is prime, find its factors, and discover the nearest prime numbers above and below
GCD/LCM Calculator
Find the Greatest Common Divisor and Least Common Multiple of two or more numbers with detailed steps
Factorial Calculator
Calculate factorials, permutations, and combinations for any number with step-by-step computation
Why Use itoolz for Math?
Scientific calculator with trig, log, and memory functions
Step-by-step computation breakdowns
Binary and bitwise operations for developers
Number theory tools (primes, factors, GCD, LCM)
Permutations and combinations calculator
Works offline once loaded — no server dependency