Working Days Calculator

What This Calculator Does

Enter a start date, an end date, and whether to exclude weekends. You can also enter a number of public holidays that fall in that period. The calculator counts only the days that are actual working days — Monday through Friday, minus any holidays you've specified.

This gives a different number from a standard date difference calculator, which counts all calendar days including weekends. Use this one whenever a contract, deadline, or payroll calculation specifies "business days" rather than calendar days.

Worked Example

Where Business Days Are Used

Many industries and legal contexts count time in business days rather than calendar days:

• Banking and finance — Trade settlement windows (T+2, T+3), loan notice periods, and regulatory submission deadlines are almost always quoted in business days.
• E-commerce and logistics — "Delivery in 5–7 business days" needs to be translated into a real calendar date. This tool makes that conversion instant.
• Construction and real estate — Completion schedules, handover clauses, and penalty provisions often count working days to exclude weekends and recognised holidays.
• Legal and compliance — Notice periods, response deadlines in litigation, and regulatory filing windows are frequently expressed in working days under local law.
• Payroll processing — HR teams use business day calculations to determine cut-off dates, the last working day of the month, and salary transfer timelines.

Tips for an Accurate Count

• Check your regional weekend — Most countries treat Saturday and Sunday as the weekend, but some regions observe a Friday–Saturday or Sunday-only rest day. If your workplace follows a different pattern, use "All 7 days" and adjust manually.
• Count only relevant holidays — Enter the number of public holidays that actually fall within your date range and that your organisation treats as non-working days. Don't include holidays that land on weekends if your workplace doesn't give a compensatory day off.
• Boundary dates — This calculator includes both the start and end date if they fall on working days. If your contract counts only days strictly between the two dates, subtract two from the result.

Common Mistakes to Avoid

• Forgetting to switch off weekend exclusion for 7-day operations — If your business runs Saturdays and Sundays as normal working days, leaving "Exclude Weekends" set to Yes will undercount your total by up to two days per week.
• Entering holiday count instead of holiday dates — This tool takes a simple number of holidays, not specific dates. If you enter "3" but only 1 of those holidays actually falls inside your date range, the result will be under by 2 days.
• Assuming a built-in holiday calendar — There is no automatic public holiday list here. Skipping this step and leaving holidays at 0 will overstate the working days whenever a holiday falls in range.
• Using this for date-difference questions — If you actually want the full calendar gap including weekends (e.g., "how many days until my flight"), use the Date Difference calculator instead — this one is specifically for business-day counts.
• Assuming every country uses a Saturday–Sunday weekend — Several countries observe a Friday–Saturday weekend instead. If that applies to you, switch to "All 7 days" and subtract your actual non-working days manually.

Frequently Asked Questions