Time Duration Calculator
A time duration calculator measures total elapsed hours, minutes, and seconds between an initial start time and end time, accounting for unpaid breaks. Ideal for payroll timesheets and athletic logs, it verifies that working from 8:30 AM to 5:00 PM with a 45-minute lunch yields 7.75 hours.
By Daniel Okoro (Mathematics Editor) · Reviewed by Maya ChenUpdated · Published
Unpaid Break
0min
NET DURATION
Decimal payroll equivalent: 8.75 hrs (Gross: 8h 45m).
How Does the Time Duration Calculator Work?
- Enter the starting time (hour, minute, AM/PM or 24-hour).
- Enter the ending time.
- Get total hours, minutes, and decimal hours (useful for work timesheets).
What Is the Time Duration Formula?
Duration = End Time - Start Time (mod 24 Hours)
Subtract start minutes from end minutes, adding 24 hours if end time crosses midnight.
Variables
Duration:Elapsed hours and minutes
How Do You Calculate Time Duration Step by Step?
Work shift starting at 8:30 AM and ending at 5:15 PM with a 45-minute lunch breakStart Time: 8:30 AM
End Time: 5:15 PM
Break: 45 min
Gross elapsed time: 8 hours and 45 minutes (8.75 hours)
Subtract unpaid break: 45 minutes
Net working duration: 8 hours and 0 minutes (8.00 decimal hours)
Final Solution:8 hours, 0 minutes (8.00 hours)
Time Duration Questions and Answers
Divide the number of minutes by 60. For example, 45 minutes ÷ 60 = 0.75 hours.