About the Shift Hours Calculator
What is the Shift Hours Calculator?
This shift hours calculator works out paid hours from your shift times, handling shifts that cross midnight.
It also shows weekly hours, overtime beyond a standard day and hours worked between 10 PM and 6 AM.
How to use the Shift Hours Calculator
- Shift Start (sample: 09:00)
- Shift End (sample: 18:00)
- Unpaid Break (minutes) (sample: 60)
- Shifts per Week (sample: 5)
- Standard Hours per Day (sample: 8)
- Press Calculate Shift Hours (results also refresh as you type). The result card shows the Hours Worked, along with Hours and minutes, Shift length including break, Overtime beyond standard day and Hours per week.
Formula used
Hours worked = (End − Start, + 24 h if overnight) − Break
Worked example
These are the sample values already filled in the calculator above, and the result it returns for them:
| Input | Sample value |
|---|---|
| Shift Start | 09:00 |
| Shift End | 18:00 |
| Unpaid Break (minutes) | 60 |
| Shifts per Week | 5 |
| Standard Hours per Day | 8 |
| Result | Value |
|---|---|
| Hours Worked | 8 hours |
| Hours and minutes | 8 h 00 min |
| Shift length including break | 9 h 00 min |
| Overtime beyond standard day | 0 hours |
| Hours per week | 40 |
| Night hours (10 PM–6 AM, incl. break) | 0 |
| Shift type | Same-day shift |
Tips for using the Shift Hours Calculator
- Under the Factories Act, the spread-over of a shift including breaks should not exceed 10.5 hours.
- Night hours matter for night-shift allowances and for women's night-work permissions.