Link

Add, minus, divide and multiply time values.
Let the calculators perform all of the complex calculations for you.
Time zone calculator with DST support
The Time Calculator is similar to a standard calculator
Calculator is a small as it says calculator written in C++.
You can use Calculator to perform any of the standard operations.
You can use Calculator to perform any of the standard operations.
Calculate the download time of a file depended on file's size
A web application, which contains seven mortgage calculators.
Determine the approximate time to pay off your debts.
Time Difference Calculator will calculate the number of days.
GRE Calculator functionality, learn tips and strategies, practice problems.
For all of those troublesome and time consuming calculations in the audio world
Extra Time Calculator allows exam end times to be easily calculated.
Once upon a time there was a pocket calculator called the HP15C.
Math::Calculator -- a multi-stack calculator class
It’s a decent time-tracking tool for hourly workers.
Calculate hours worked, outputting total hours, and total wages.