Working Days Between Two Dates
Count the exact number of working days (Mon–Fri) between any two dates. Weekends excluded. For public holiday exclusions by country, choose a country-specific calculator below.
Pick two dates — get the exact number of Mon–Fri days between them. Weekends excluded, both dates inclusive.
After calculating, copy the result into your workflow instead of searching for the calculator again.
Calculate first, then reuse the result
After you calculate, UtilityPilot can turn the result into a clean note you can paste into your SOP, spreadsheet, CRM, Slack, Notion, checklist or email.
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Formula
Business Days = Count of Mon–Fri days from Start Date to End Date (inclusive)
Every calendar day between the two dates is checked. If it falls on Monday through Friday, it is counted. Saturday and Sunday are always skipped.
Worked Example
Scenario 1 — SLA tracking:
A support ticket is raised on Monday 5 May. Your SLA requires a resolution within 5 business days.
Start: Monday 5 May • End: Friday 9 May = 5 business days
If the period crossed a weekend (Mon 5 May → Mon 12 May): the result is 6 business days — Saturday and Sunday are excluded.
Scenario 2 — Project sprint duration:
A two-week sprint runs from Monday 3 February to Friday 14 February.
Week 1: Mon–Fri = 5 days • Week 2: Mon–Fri = 5 days
Total: 10 business days
Scenario 3 — Payment terms check:
An invoice is issued on Friday 7 March under Net 30 business days terms. The due date falls on Thursday 17 April (30 business days later, skipping 8 weekend days).
For calendar-day Net 30 terms, use the Invoice Due Date Calculator instead — it handles both calculation methods.
Common Mistakes
- Forgetting that both dates are inclusive. Mon 1 May to Fri 5 May = 5 business days, not 4.
- Expecting public holidays to be excluded. This calculator only excludes weekends. For UK or EU bank holidays, use the regional calculators.
- Confusing calendar days with business days. A 30-calendar-day SLA is not the same as a 30-business-day SLA — the latter is roughly 6 weeks.
Guide
How to Use
- 1
Enter the start date
Select the first day of the period you want to measure.
- 2
Enter the end date
Select the last day. Both dates are included in the count.
- 3
Click Count Business Days
The tool counts every Mon–Fri between the two dates.
- 4
Copy your result
Use the copy button to paste into emails or project trackers.
Next Steps
What to do next
FAQ
Frequently Asked Questions
Related by Workflow
Country Working Days Calculators
UK Working Days
8 England & Wales bank holidays excluded
US Working Days
11 US federal holidays excluded
France Working Days
11 jours fériés excluded
Germany Working Days
9 nationwide public holidays excluded
Australia Working Days
National holidays incl. ANZAC Day excluded
South Africa Working Days
12 SA national public holidays excluded
Belgium Working Days
10 Belgian national holidays excluded
Working Days Europe
Multi-country EU working days tool
Working days vs business days
In most everyday and business usage, working days and business days mean the same thing: Monday through Friday, excluding weekends. Some contracts or legal frameworks use "working days" with a specific meaning that may include or exclude public holidays. Always check your contract language.
Worked example
Project duration check
Project start: Monday 6 January Project end: Friday 31 January
January has 23 working days (5 full Mon–Fri weeks minus 2 weekend days each)
Result: 20 working days (4 full working weeks)
Note: If any public holidays fall in this range, use a country calculator to exclude them.
Need public holidays excluded?
Use this in your workflow
After calculating, use Copy result summary to paste the result into your SOP, spreadsheet, CRM, Slack, Notion, email or checklist. Save it once and your team can reference it without recalculating each time.