Working Hours Between Two Dates
Calculate the total working hours between two dates counting Monday–Friday at a configurable hours-per-day.
How to use this tool
- Enter start date, end date and hours per day in the fields above.
- Results update instantly as you type — or click Calculate.
- Read your working days and the full breakdown beneath it.
Calculate the total working hours between two dates counting Monday–Friday at a configurable hours-per-day.
How it works
This tool calculates the total number of working hours between two dates, counting only Monday through Friday and multiplying by a configurable number of hours per workday. Weekends are excluded automatically.
Enter a start date, an end date, and the number of working hours per day (default is typically 8). The tool counts every weekday in the range and multiplies by the hours-per-day value to give a total. The start and end dates themselves are included if they are weekdays.
This is useful for project estimation (how many billable hours are available in a sprint?), leave management (how many working hours in a given notice period?), invoicing for time-based contracts, and resource planning. It gives a quick upper bound on available capacity without manually counting weekdays on a calendar.
Note that the tool does not account for public holidays. If your region has holidays in the date range, subtract the holiday hours from the result manually or use a more specialized workforce tool that includes a holiday calendar.
Worked example
Available working hours in Q1 2026
- Enter start date: 2026-01-01
- Enter end date: 2026-03-31
- Set hours per day: 8
- Click Calculate
- Read result: 63 working days x 8 hours = 504 hours
504 working hours (63 weekdays in Q1 2026)
Common mistakes to avoid
- Forgetting to subtract public holidays from the result when the date range spans a bank holiday period.
- Using the default 8-hour day without adjusting for part-time workers or reduced-hours days.
- Expecting the result to match a payroll system that uses a different definition of a workday (e.g., excluding the start date or the end date).
Key terms
- Working day
- A weekday (Monday through Friday) on which work is typically performed, excluding weekends.
- Capacity planning
- Estimating the total effort available in a time period by counting working days and hours.
Frequently asked questions
- Are public holidays excluded?
- No — only weekends are skipped. Subtract any public holidays manually from the result.
- Can I use 7.5 or 9 hours per day?
- Yes — enter any number in the 'Hours per day' field for part-time or extended schedules.