Free Work Hours Calculator
Calculate total work hours for weekly payroll computation.
Quick answer
Hours worked = (daily hours × days per week × weeks) − (absent days × daily hours) + overtime hours. Under the Factories Act, 1948, an adult worker may work up to 9 hours a day and 48 hours a week, and overtime is paid at twice the ordinary rate. Shops follow their state's Shops and Establishments Act.
Last reviewed November 2026.
How to use the Work Hours Calculator
Fill in these fields and the work hours calculator works out the rest instantly, in your browser:
- Standard Daily Work Hours
- Work Days per Week
- Number of Weeks
- Absent Days
- Overtime Hours Total
Worked example
With Standard Daily Work Hours: 8; Work Days per Week: 6; Number of Weeks: 4; Absent Days: 2; Overtime Hours Total: 0:
| Scheduled Hours | 192 hrs |
| Absence Deduction | 16 hrs |
| Regular Hours Worked | 176 hrs |
| Overtime Hours | 0 hrs |
| Total Hours Worked | 176 hrs |
Frequently asked questions
How is overtime calculated in India?
For factories, overtime is hours beyond 9 a day or 48 a week, paid at twice the ordinary hourly wage. The hourly rate is commonly worked out as (basic + DA) ÷ 26 ÷ 8.
Can Staff Khata do this calculation automatically every month?
Yes. Staff Khata takes attendance from Realtime biometric machines, a rotating QR code or selfie + GPS punches, then works out salary, PF, ESI, advances and payslip PDFs for each employee. Payroll is on the Growth plan at ₹0.50 per employee per day.
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