Arithmetic helpers: fractions, primes, number words, Roman numerals and binary maths.
Pure-maths helpers for schoolwork, homework checks and quick problems: work with fractions, find a GCD or LCM, test whether a number is prime, or turn numbers into words and roman numerals. These math tools are focused calculators that give you the result straight away — not a step-by-step solver app, and not homework done for you.
The Fraction Calculator adds, subtracts and simplifies fractions, the Scientific Calculator covers powers, roots and trigonometry, the GCD Calculator finds the greatest common divisor of two numbers, and the Roman Numeral Converter works in both directions. Students, teachers and developers sanity-checking figures are the main users. Each one answers immediately, with nothing to install and no account to create. Money questions — loans, tax, percentages and interest — belong with the online calculators instead.