Decimal Time Difference Calculator

Calculate time in decimal hours.

If you bill for your time (freelancer, lawyer) or are charged for time of use (pilot), you need this app.

What is 3 hours and 42 minutes in decimal hours? 3.70 hours of course!

"Quick Mode” (new)
Instantly covert hours:minutes to X.YZ hours and back.

"Difference Mode"
You start working on a task at 2:13pm, you stop your billable time at 5:52pm.

What is the elapsed time in decimal hours? D.T.D.C. easily lets you know that this is 3.65 hours.

Copy the result to the clipboard to use in other apps.

Multiply by your hourly rate on your invoice, and get paid!

This utility calculates the difference between two times (hours:minutes) and reports in decimal hours (x.yz hours). NEW Quick Mode lets you instantly convert time to decimal hours and back.