About this tool
Calculate working hours for standard, part-time, and overnight shifts, then subtract breaks to get a clean paid-hours total.
Hours Calculator is built for real shift and payroll planning tasks, especially when breaks, overnight work, or weekly totals make the math annoying to do manually. It is more practical than a simple start-minus-end time subtractor.
- Uses explicit Automatic, Same day, and Next day policies to resolve overnight and equal-time shifts up to 24 hours.
- Strictly validates 24-hour clock values, total break minutes, repeated workdays, and a configurable weekly comparison threshold.
- Shows paid time in exact hours and minutes plus decimal hours for timecard and payroll review.
- Separates weekly time under and above the chosen threshold without claiming a legal overtime determination.
How to use Hours Calculator
Enter the shift start and end times, subtract unpaid breaks, and review the paid-hours result. If you are planning weekly totals or overtime, use the weekly settings so regular and overtime hours stay clearly separated.
When this tool is useful
- Calculate paid hours for standard, part-time, or overnight shifts before payroll review.
- Check whether break deductions are pushing a shift below a target paid-hours threshold.
- Estimate staffing coverage when schedules cross midnight or change between weekdays and weekends.
Practical tips
- Treat paid hours and scheduled hours separately so break deductions stay visible to managers and staff.
- Use overnight presets when testing shifts that cross midnight because those are where spreadsheet mistakes usually happen.
- Pair this with business-day or date-difference tools when you need both daily shift math and multi-day planning.
Examples you can test
Load an example, compare the result with the expected output, then replace it with your own input.
Add work session hours
Example input
09:00-12:30 and 13:30-17:00
Expected output
7 hours
Useful for checking daily work logs before copying totals into a timesheet.
Calculate a partial-day total
Example input
Start: 10:15, end: 16:45, break: 30 minutes
Expected output
6 hours
Break handling should match the policy or system where the final time will be recorded.
Validation checklist
- Confirm whether breaks should be subtracted from the total.
- Check AM/PM and 24-hour time formats before calculating.
- Use the result as a timesheet aid, not as a payroll system of record.