Time Duration Calculator
Calculate elapsed time between two clock times in hours, minutes, and decimal hours.
Results
How to Use This Calculator
The time duration calculator finds elapsed time between two clock times. It works for work logs, shifts, study sessions, billable time, travel timing, and simple scheduling math.
Formula
Convert start and end times to minutes, subtract start from end, then convert total minutes back to hours and minutes.
Example
From 9:00 to 17:30 is 8 hours 30 minutes, or 8.5 decimal hours. If the end time is on the next day, use the crosses midnight option.
Common Tips
- Use decimal hours for payroll, invoices, and timesheets.
- Use hours and minutes for schedules and personal planning.
- Check AM/PM assumptions when converting from 12-hour time.
Frequently Asked Questions
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