Units, currency, time & numbers

Convert numbers between binary, octal, decimal and hexadecimal.

Convert between currencies using daily exchange rates.

Count the days, weeks, hours and the years, months and days between two dates, or add and subtract days, weeks, months or years from any date.

Calculate X percent of a number, find what percent one value is of another, and measure the percent change between any two numbers instantly.

Convert times between time zones and see a world clock.

Convert length, mass, temperature, area, volume and speed units.