Work Hours Calculator
Add work start and end times, subtract breaks, and total daily and weekly hours, with optional overtime and pay estimates.
Daily hours
Tick the days you worked, then enter start time, end time, and unpaid break minutes for each day.
Overtime and pay (optional)
Set a weekly overtime threshold, and add an hourly rate to estimate gross pay. Leave the rate blank to hide the pay estimate.
Hours above this count as overtime. Use 0 to turn the split off.
Your regular pay rate before overtime.
Use 1.5 for time-and-a-half or your applicable rate.
Used only for the gross pay estimate.
Weekly total
37 h 30 min
37.50 hours across 5 days.
Days worked
5
Number of days with recorded hours this week. Add an hourly rate for a pay estimate.
Regular hours
37 h 30 min
Up to your weekly threshold.
Overtime hours
0 h 0 min
Above your weekly threshold.
Total (decimal)
37.50 hours
Handy for timesheets that use decimal hours.
How it works
From clock times to weekly hours
Shift length
Each day is the time between start and end. The calculator converts both to minutes and finds the gap.
Unpaid breaks
Break minutes are subtracted from the shift. If a break is longer than the shift, the day counts as 0 hours.
Overnight shifts
When the end time is earlier than the start time, the shift is assumed to cross midnight and a day is added.
Weekly total
Daily hours are added into a weekly total, then split into regular and overtime using your threshold.
Examples
Worked examples
Standard day
7 h 30 min
09:00 to 17:00 with a 30 minute unpaid break is an 8 hour shift minus the break.
Five weekdays
37 h 30 min
Five days of 09:00 to 17:00 with a 30 minute break each add up to a full week.
Overnight shift
7 h 30 min
22:00 to 06:00 with a 30 minute break crosses midnight and still totals 7 hours 30 minutes.
Good to know
Overtime and pay notes
Overtime threshold
A common weekly threshold is 40 hours, but some employers use a different number or calculate overtime per day.
Gross pay estimate
Gross pay is total earnings before tax and deductions. Enter an hourly rate to see a rough estimate.
Rules vary
Overtime eligibility, break rules, and multipliers depend on your contract, employer, and location.
Estimate only
This tool does not run payroll, calculate tax or withholding, or determine legal overtime eligibility.
Decimal hours
The decimal total (for example 7.50 hours) is useful for timesheets and invoicing that bill in decimals.
Cross-check
Compare the result with your timesheet, contract, or payslip before relying on it for pay.
FAQ
Work hours calculator questions
Enter your start time and end time, then enter your unpaid break in minutes. The calculator subtracts the break from the shift length, so 09:00 to 17:00 with a 30 minute break is 7 hours 30 minutes.
This calculator is for planning and estimation. Pay, overtime, and break rules vary by employer, contract, and location, so check your own agreement for exact treatment.
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Estimate only. This calculator is for general planning and education, not financial, tax, investment, legal, lender, or professional advice. Actual results can vary based on rates, fees, taxes, market conditions, lender rules, employer rules, contribution limits, and local regulations. Verify important decisions with a qualified professional, lender, official source, or relevant institution.
Related reading
Learn the formula, assumptions, examples, or context behind this tool.