5 tools
Calculators
Quick maths: percentages, VAT, loans and everyday conversions.
- LCM and GCDThe lowest common multiple and greatest common divisor of several numbers.
- Prime factorisationBreak a number into primes, list its divisors, spot a prime.
- BMI calculatorWork out your body mass index and which band it falls in.
- Number statisticsMean, median, deviation and quartiles from a column of numbers.
- Roman numeralsConvert Roman numerals to numbers and back, with a breakdown.