🧮 8 tools

Calculators

Everyday, health and maths calculators that just work — age, BMI, tips, units and more.

Find an exact age in years, months and days from a date of birth.

Calculate Body Mass Index with metric or imperial units.

Split a bill and work out the tip per person.

Convert length, weight and temperature between common units.

Count the days, weeks and months between two dates.

Find the mean, median, mode, sum, min and max of a list.

Generate random numbers in a range, with an optional unique mode.

Spell out any number in words — useful for cheques and contracts.