Free Work Hours Calculator
Calculate work hours instantly with this free online work hours calculator.
Use the tool below to enter your shifts, start times, end times and breaks. The calculator will show your total work hours, decimal hours, regular hours, overtime hours, total break time and estimated pay.
| Day / Date | Start | End | Break h | Break min | Total |
|---|
Enter your shifts to calculate total work hours.
What is a Work Hours Calculator?
A work hours calculator is an online tool that helps you calculate the total time worked from one or more shifts. It can subtract break time, calculate decimal hours, estimate overtime and calculate pay based on an hourly rate.
Instead of manually adding hours from a timesheet, you can enter each work shift and get the total instantly.
This work hours calculator runs directly in your browser and processes the calculation locally.
What can you use a Work Hours Calculator tool for?
You can use this calculator for work shifts, timesheets, payroll estimates, freelance billing, hourly work, part-time jobs, weekly schedules, overtime checks and project time tracking.
The calculator can calculate total hours worked, total break time, decimal hours, regular hours, overtime hours and estimated pay.
How to use the Work Hours Calculator
Step 1: Enter your shifts
Add each work shift as a separate row. You can enter the date, start time and end time.
Step 2: Add break time
Enter break hours and break minutes for each shift. The calculator subtracts break time from the total worked time.
Step 3: Set overtime and pay options
You can enter an hourly rate, overtime threshold and overtime multiplier. For example, overtime may start after 40 hours with a 1.5 multiplier.
Step 4: Choose rounding if needed
You can round shift totals to the nearest 5, 10, 15 or 30 minutes.
Step 5: Calculate total hours
Click the calculate button to see total work hours, decimal hours, regular hours, overtime hours and estimated pay.
Work hours results
This calculator can show:
- Total worked time
- Decimal hours
- Regular hours
- Overtime hours
- Total break time
- Estimated regular pay
- Estimated overtime pay
- Estimated total pay
- Number of shifts counted
- Shift-by-shift totals
How work hours are calculated
The calculator subtracts the start time from the end time for each shift. Then it subtracts break time.
Example:
Start: 09:00
End: 17:30
Break: 30 minutes
Total time: 8 hours 30 minutes
Worked time after break: 8 hours
If the end time is earlier than the start time, the calculator treats it as an overnight shift.
Decimal hours
Decimal hours convert hours and minutes into a number format.
Examples:
- 30 minutes = 0.5 hours
- 45 minutes = 0.75 hours
- 1 hour 15 minutes = 1.25 hours
- 8 hours 30 minutes = 8.5 hours
Decimal hours are useful for timesheets, payroll, invoices and freelance billing.
Overtime calculation
You can enable overtime and choose when overtime starts.
For example, if overtime starts after 40 hours and you worked 45 hours, the calculator will count:
- 40 regular hours
- 5 overtime hours
If you add an hourly rate and overtime multiplier, the calculator can estimate regular pay, overtime pay and total pay.
Rounding work hours
Some workplaces round time entries to the nearest 5, 10, 15 or 30 minutes.
This calculator lets you choose whether to use rounding or keep the exact calculated shift duration.
If you are using the calculator for payroll, always follow your workplace rules and local regulations.
Common use cases
For employees
Employees can calculate weekly work hours, breaks, overtime and estimated pay before submitting a timesheet.
For freelancers
Freelancers can calculate billable hours, decimal hours and estimated project income.
For managers
Managers can quickly estimate staff hours across multiple shifts.
For payroll checks
You can check whether total hours, break deductions and overtime estimates look correct.
For students and part-time workers
Part-time workers can calculate weekly hours and expected pay from several shifts.
Important note
This calculator provides general estimates.
Payroll rules, overtime laws, rounding rules, break requirements and tax deductions can vary by country, state, company and contract. Always check your official timesheet, employer policy or local labor rules when using the result for payroll.
Related tools
Is this Work Hours Calculator free?
Yes. This work hours calculator is completely free to use.
Are my work hours stored?
No. Your shifts and times are processed directly in your browser. They are not uploaded, saved or stored.
Can I calculate multiple shifts?
Yes. You can add multiple shift rows and calculate the total work hours.
Can I subtract breaks?
Yes. You can enter break hours and break minutes for each shift.
Can it calculate overnight shifts?
Yes. If the end time is earlier than the start time, the calculator treats it as an overnight shift.
Does it show decimal hours?
Yes. The calculator shows total decimal hours.
Can it calculate overtime?
Yes. You can enable overtime, set the overtime threshold and choose an overtime multiplier.
Can it estimate pay?
Yes. Enter your hourly rate to estimate regular pay, overtime pay and total pay.
Can I round work hours?
Yes. You can choose no rounding or round to the nearest 5, 10, 15 or 30 minutes.
Can I copy the result?
Yes. You can copy the work hours calculation result to your clipboard.
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