Calculate scheduled working hours between two dates using a chosen working day length. The calculator runs entirely in your browser and pairs a focused answer with the method, assumptions and the related tools worth checking next.
Your inputs stay in this browser tab. Nothing is sent to a server to produce the result.
Review the inputs and select Calculate.
Enter a start date, an end date, the hours in a working day, a weekend pattern and, optionally, a holiday calendar. The calculator counts the days in the span that are not weekend days (and not listed holidays), then multiplies that working-day count by the hours per day.
Every date from the start date to the end date inclusive is tested against the chosen weekend pattern — Saturday and Sunday, Friday and Saturday, Sunday only, or none. The surviving days are working days, and the hours figure is simply that count times the stated day length.
From Monday 5 January to Friday 16 January 2026, at 8 hours per day with a Saturday-and-Sunday weekend and no holiday calendar, the span holds 10 working days in 12 calendar days — 80 working hours.
The same 5–16 January 2026 span under a Friday-and-Saturday weekend holds 9 working days (72 hours), and with no weekend at all it holds 12 (96 hours). Part-days, overtime and shift patterns are not modelled, and with no holiday calendar selected no public holidays are removed — adjust for your own holidays before using the number in a contract.
Enter the start and end dates, the hours per working day and the weekend pattern, then select Calculate. Each step below is a short action rather than a wall of explanation.
Use the most reliable source value available for this input.
Use the most reliable source value available for this input.
Use the most reliable source value available for this input.
Read the result, then copy, print or share a link that reopens the same inputs.
Count the days that are not in the selected weekend pattern, then multiply by the stated working-day length.
Similar tools answer different questions. Match the inputs and the reference point to the answer you actually need.
The numbers come from your inputs; this shows the shape of the calculation.
Enter the first date of the span — every date from the start to the end date inclusive is tested.
Enter the last date of the span, then the Hours per working day, the Weekend pattern and, optionally, a Holiday calendar.
Working days × hours per day: Monday 5 January to Friday 16 January 2026, at 8 hours a day with a Saturday-and-Sunday weekend, holds 10 working days in 12 calendar days — 80 working hours. Part-days, overtime and shift patterns are not modelled.
Use exact source inputs, keep the reference date visible and verify any official rule separately.
Set the reference date to the event that actually controls the decision, not to today.
Compare the stated method here against the other tool's convention before assuming an error.
For a neighbouring calculation, open the Days Between Dates Calculator or the Date Difference Calculator. To understand the reasoning first, read How to Add Months to a Date Safely.
Choose another focused tool when the underlying question changes.
Understand the calendar rules, edge cases and next steps behind this calculator.
Answers about method, inputs, privacy, boundaries and responsible interpretation.
Enter a start date, an end date, the hours in a working day, a weekend pattern and, optionally, a holiday calendar. The calculator counts the days in the span that are not weekend days (and not listed holidays), then multiplies that working-day count by the hours per day.
From Monday 5 January to Friday 16 January 2026, at 8 hours per day with a Saturday-and-Sunday weekend and no holiday calendar, the span holds 10 working days in 12 calendar days — 80 working hours.
Yes. Every date from the start date to the end date inclusive is tested against the chosen weekend pattern — Saturday and Sunday, Friday and Saturday, Sunday only, or none. The surviving days are the working days.
The same 5–16 January 2026 span under a Friday-and-Saturday weekend holds 9 working days (72 hours), and with no weekend at all it holds 12 (96 hours).
Part-days, overtime and shift patterns are not modelled, and with no holiday calendar selected no public holidays are removed — the page advises adjusting for your own holidays before using the number in a contract.
Navjeet Kamboj is the author and editor of Age Calculator Lab. He focuses on making age, date, milestone and planning calculations easier to understand through clearly explained methods, practical examples and responsible limitations.