Here you can convert time units.
add quarter hour calculator
this is a good page for school
We just launched Time to decimal calculator;
Thank you for your feedbacks...
It would be great to have a conversion for hh:mm:ss to decimal. For example: 10:30:30 = 10.505 for determining hourly payments.
Doing a wedding planning. This is very helpful if there was a time i can set then count, add or subract from that set time.