Our free hours calculator is designed for workers, employers, and freelancers who need to track total hours worked across multiple shifts. Add your shift start and end times, include a break deduction, and optionally enter your hourly rate to calculate total hours worked and gross pay for any period.
Whether you are calculating a weekly timesheet, checking your pay stub, or billing a client for hourly work, this hours calculator gives you an accurate total in seconds. It supports overnight shifts and up to 20 shifts at once, making it suitable for both simple and complex schedules.
🕐 Hours Calculator
Calculate total hours worked across multiple shifts.
🕐 Hours Summary
How to Use the Hours Calculator
To calculate your hours worked, follow these steps:
- Enter the start time and end time for your first shift.
- Click + Add Shift to add more shifts as needed.
- Enter your break time in minutes — this applies equally to each shift.
- Optionally, enter your hourly rate to calculate gross pay.
- Click Calculate Hours to see total hours worked, total breaks, and estimated gross pay.
When Should You Use an Hours Calculator?
Use the hours calculator every week to verify your timesheet before submitting it to your employer. In particular, it is helpful when you work variable hours or split shifts, as manual calculation is error-prone. Furthermore, freelancers and contractors use it to accurately bill clients for hourly work.
Additionally, employers and managers use the hours calculator for payroll verification. Moreover, it is useful for employees who track their own overtime — in the USA, federal law (FLSA) requires 1.5× pay for hours over 40 per week, and the hours calculator helps you identify when you cross that threshold.
Hours and Pay Tips for Workers in the USA and Canada
Here are important things to know about tracking hours and pay:
- US overtime rules: Under the FLSA, non-exempt employees in the USA must receive at least 1.5× their regular rate for all hours worked over 40 per week.
- Canadian overtime rules: Overtime rules vary by province. In Ontario, for example, overtime is payable at 1.5× for hours over 44 per week.
- Keep your own time records — Do not rely solely on your employer’s records. Tracking your own hours protects you in case of disputes.
- Meal breaks vs rest breaks — In most jurisdictions, unpaid meal breaks of 30+ minutes do not count as hours worked, but paid rest breaks do.
Frequently Asked Questions About the Hours Calculator
How do I calculate hours worked from time in/time out?
Subtract the start time from the end time. For example, if you start at 8:30 AM and finish at 5:15 PM, the difference is 8 hours and 45 minutes (8.75 hours). If you take a 30-minute unpaid break, your paid time is 8 hours and 15 minutes (8.25 hours).
Does the hours calculator handle overnight shifts?
Yes. If your end time is earlier than your start time, the calculator automatically assumes the shift crossed midnight and calculates the duration correctly. For example, a 10 PM to 6 AM shift correctly calculates as 8 hours.
Related Calculators
Furthermore, you might find these related tools useful: Salary Calculator — Time Calculator — Date Calculator
Disclaimer: Gross pay figures are estimates before tax and deductions. Consult your employer or HR department for exact payroll calculations.