Arithmetic & Number Calculators
Whole-number tools for everyday arithmetic: evaluate an expression with the correct order of operations, round to any place, find greatest common factors and least common multiples, break a number into its primes, and switch to and from scientific notation.
GCF (Greatest Common Factor)
Greatest common factor of two or more integers via the Euclidean algorithm, with a division check.
e.g. GCF of 48 and 36StepsExact resultVerified
LCM (Least Common Multiple)
Least common multiple of two or more integers via lcm(a,b) = |a·b| ÷ gcd(a,b), with a check.
e.g. LCM of 4 and 6StepsExact resultVerified
Prime Factorization
Break an integer into prime factors with exponents, or confirm it is prime, with a product check.
e.g. Factor 360StepsExact resultVerified
Advanced Scientific Calculator
A full expression calculator with functions, memory and DEG/RAD, plus a reproducible calculation receipt.
e.g. sin(30) + 2^5StepsVerifiedLocal only
Order of Operations
Evaluate an expression with the correct PEMDAS/BODMAS order and see every reduction step.
e.g. 2 + 3 × 4StepsDecimal resultVerified
Rounding
Round to any decimal place using half-up, banker’s rounding, floor, ceiling or truncation.
e.g. 3.14159 to 2 dpStepsMultiple methodsDecimal result
Scientific Notation
Convert a number to and from scientific notation a × 10^b, with the coefficient and exponent.
e.g. 12,345StepsExact resultVerified