Overtime Hours Calculator
Standard Formula
Overtime Hours = Max(0, Total Hours - 40); Regular = Min(Total Hours, 40)
Splits any total work duration into standard base hours and statutory overtime hours.
How Overtime Hours Calculator Works?
The Overtime Hours Calculator works by splitting total hours into regular hours up to the weekly limit and overtime hours above it.
1Enter total hours
Add all hours worked in the workweek, 52.5 by default.
2Confirm the weekly limit
Keep 40 or enter another threshold.
3Read overtime hours
52.5 − 40 returns 12.50 overtime hours.
4Check the overtime share
The tool shows that 12.5 of 52.5 hours, or 23.8%, are overtime.
Overtime Hours Calculator Formula
The Overtime Hours Calculator formula is Overtime Hours = Max(0, Total Hours − 40) and Regular Hours = Min(Total Hours, 40).
Overtime hours
OT = Max(0, Total − Limit)
Regular hours
Regular = Min(Total, Limit)
Overtime percentage
OT % = OT ÷ Total × 100
- Total
- All hours worked in the workweek.
- Limit
- Weekly overtime threshold.
- OT %
- Share of hours that are overtime.
Worked example: 47 hours 20 minutes
47h 20m = 47.33 decimal hours.
OT = 47.33 − 40 = 7.33 hours (7h 20m). OT % = 15.5%.
Overtime Hours Calculator Conversion Table
The Overtime Hours Calculator conversion table splits 10 weekly totals into regular and overtime hours, in decimal and clock format.
| Total Hours | Regular Hours | Overtime (Decimal) | Overtime (h:m) | Overtime % of Hours |
|---|---|---|---|---|
| 40.00 hrs | 40.00 hrs | 0.00 hrs | 0h 0m | 0.0% |
| 41.50 hrs | 40.00 hrs | 1.50 hrs | 1h 30m | 3.6% |
| 42.25 hrs | 40.00 hrs | 2.25 hrs | 2h 15m | 5.3% |
| 44.00 hrs | 40.00 hrs | 4.00 hrs | 4h 0m | 9.1% |
| 45.75 hrs | 40.00 hrs | 5.75 hrs | 5h 45m | 12.6% |
| 48.00 hrs | 40.00 hrs | 8.00 hrs | 8h 0m | 16.7% |
| 50.00 hrs | 40.00 hrs | 10.00 hrs | 10h 0m | 20.0% |
| 52.50 hrs | 40.00 hrs | 12.50 hrs | 12h 30m | 23.8% |
| 56.00 hrs | 40.00 hrs | 16.00 hrs | 16h 0m | 28.6% |
| 60.00 hrs | 40.00 hrs | 20.00 hrs | 20h 0m | 33.3% |
What is Overtime Hours Calculator?
An Overtime Hours Calculator is a time tool that separates statutory overtime hours from regular hours. The tool counts hours only; it does not price them.
Payroll systems need hours split into 2 buckets before any pay rate applies. The same split feeds overtime reports, union seniority lists and fatigue policies.
Count only hours worked. Paid time off, holidays not worked and unpaid meal breaks stay out of the total under the FLSA.
What are the uses of Overtime Hours Calculator?
There are 4 main uses of the Overtime Hours Calculator.
Timecard prep
Workers split weekly hours before entering them in payroll.
Overtime reports
Supervisors report overtime hours per person or per team.
Fatigue checks
Safety managers flag people with overtime above a set share of hours.
Equal distribution
Union stewards track overtime hours offered and worked.