The Windows Calculator is much more than a calculator!
The calculator that comes with Microsoft Windows does a lot more than add, subtract, multiply, and divide!
Use the Windows calculator to convert volume, distance, weight, temperature, area, and speed, from metric to imperial. For example, here you can easily see that 1 mile equals 1.609344 kilometers.
Use the Windows calculator to also convert time from years, weeks, days, hours, minutes, seconds, milliseconds, and microseconds to any of these same values. For example, here you can easily see that one year equals 31,557,600 seconds.
The calculator also converts any currency using the current values for each country. For example, here you can see that today the US dollar is worth 554.60 Costa Rican Colons!
Simply open the Windows calculator and click on the 3 lines (hamburger) in the upper left-hand corner for the menu of options.