Number & Math

Add up a list of numbers and see the mean, median and spread.

Write a number out in words, as a cardinal or an ordinal.

Generate arithmetic, geometric, Fibonacci, prime and square sequences.

Convert numbers between binary, octal, decimal and hexadecimal.

Convert length, mass, temperature and digital storage units.

Work out percentages, increases, decreases and differences.

Work out a typed arithmetic expression with parentheses, functions and constants.

Draw random TCP port numbers from a range while skipping ports that known services already use.

Convert a number to Roman numerals and back, with a breakdown of every symbol.