Hours Calculator
Add up hours worked across several shifts, with breaks, in hours-and-minutes and decimal hours.
About the Hours Calculator
Type each shift on its own line as start-end and, if you took one, the unpaid break in minutes, for example 09:00-17:30 30. The calculator totals the week in hours and minutes and in decimal hours, lists each shift, and multiplies by your hourly pay if you enter it.
Use 24-hour times. Shifts that end after midnight are handled automatically, so 22:00-06:00 counts as 8 hours. Decimal hours are what most payroll systems and timesheets use.
The formula
Total = Σ (end − start − break)
- end − start
- length of each shift (plus 24 h if it passes midnight)
- break
- unpaid break minutes for that shift
How to read your result
- To turn minutes into decimal hours divide by 60: 7 h 45 min = 7.75 h, not 7.45 h.
Worked example
A five-shift week
- 09:00-17:30 with 30 min break = 8 h
- 09:00-17:00 30 = 7.5 h; 08:30-16:45 45 = 7.5 h; 09:00-18:00 60 = 8 h; 09:00-13:00 = 4 h
- Total = 35 h, or 35.00 decimal hours
Things to keep in mind
- Gross pay is hours × rate only: no overtime, tax or deductions. Use the Time Card Calculator for overtime and the Salary Calculator for take-home pay.
Questions people ask
How do I enter an overnight shift?
22:00-06:00 works; it's counted as 8 hours.
How do I get overtime?
Use the Time Card Calculator, which splits regular and overtime hours.
Can I enter 12-hour times like 9am?
Use 24-hour times instead: 9am is 09:00, 5:30pm is 17:30.