Work Hours Calculator
Add up the hours you worked this week from your start and finish times, with breaks, overtime and pay.
Shifts that finish after midnight are counted correctly. Leave start and finish empty for days off.
Printed from ClearCalc (clearcalc.com.au/work-hours-calculator/). Estimates only, not financial advice.
How to calculate hours worked
For each shift, subtract the start time from the finish time, then take off any unpaid breaks. A 9am to 5pm shift with a 30-minute lunch is 7 hours 30 minutes, or 7.5 hours. Five of those make a 37.5-hour week.
Converting minutes to decimal hours
Payroll systems use decimal hours. Divide the minutes by 60: 15 minutes is 0.25, 30 minutes is 0.5 and 45 minutes is 0.75. So 7 hours 45 minutes is 7.75 hours, not 7.45.
Breaks and overtime
- Most awards give an unpaid meal break of 30 to 60 minutes after about five hours of work, and paid 10-minute rest breaks. Paid breaks shouldn't be subtracted.
- Full-time employees normally work 38 ordinary hours a week. Hours beyond that, or outside the spread of hours in your award, are often paid at overtime rates, commonly time and a half for the first two or three hours and double time after that.
- Check your award on the Fair Work website for exact break and overtime rules.
Frequently asked questions
How many hours is 9am to 5pm with a 30-minute break?
7.5 hours. Over five days that's 37.5 hours a week.
What is 7 hours 45 minutes in decimal?
7.75 hours. Divide the minutes by 60 and add them to the hours.
Does it handle night shifts?
Yes. If the finish time is earlier than the start time, the calculator assumes the shift finished the next day.
Last reviewed October 2026. This calculator gives an estimate for general information only. Check important figures with the relevant government agency or a licensed professional.