What is the Working Hours Calculator?
Shift workers, freelancers and small businesses need to total hours accurately for pay. The working hours calculator is a weekly timesheet: enter start time, end time and break minutes for each day.
It handles night shifts that cross midnight, splits regular and overtime hours at your threshold (such as 40 or 48 hours a week), and calculates pay with an overtime multiplier. For single time sums use the Time Calculator.
How to use the Working Hours Calculator
- Enter your hourly rate (optional), overtime threshold and multiplier.
- For each day, enter start, end and break minutes.
- Read total hours, regular and overtime hours and pay.
Formula
Daily hours = end − start − break · Overtime = weekly hours − threshold
Example
Monday to Friday, 9:00 to 18:00 with a 60-minute break = 8 hours a day, 40 hours a week. Add a Saturday 4-hour shift and 4 hours become overtime at 1.5×.
Working hours rules
In Pakistan, factory and shop laws generally limit adult working hours to 48 per week and 9 per day, with extra pay for overtime. Rules differ by province and sector, so check your employment contract.
Tips for accurate timesheets
Record times when you start and stop rather than at the end of the week, round consistently (for example to the nearest 15 minutes) and note unpaid breaks. Turn the weekly total into a monthly figure with the Hourly ↔ Monthly Salary calculator.
You may also need
People who use the Working Hours Calculator often need these related tools too:
- Hours From Now: Add or subtract hours and minutes from the current time to see the exact time, date and weekday it will be.
- Invoice Generator: Create a professional invoice with your logo, client details, line items, tax, discount and payment details, preview it live and download a PDF.
Frequently asked questions
How do I calculate hours worked?
Subtract start time from end time and then subtract unpaid breaks.
Does it work for night shifts?
Yes. If the end time is earlier than the start, it assumes the shift ended the next day.
How is overtime calculated?
Hours above your weekly threshold are paid at the overtime multiplier, such as 1.5× or 2×.
How do I convert hours and minutes to decimal?
Divide minutes by 60. 7 hours 45 minutes is 7.75 hours.
Can I add more days?
Yes. Click "+ Add day" for two-week or custom periods.
Is the Working Hours Calculator free to use?
Yes. The Working Hours Calculator on Custom Converter is completely free, with no sign-up, no daily limit and no watermark.
Does the Working Hours Calculator work on mobile phones?
Yes. It is built mobile-first and works on Android phones, iPhones, tablets and computers in any modern browser, with no app to install.