Tiny Online Tools
Counting Working Days the Smart Way
Counting business days by hand is deceptively tricky. You have to skip every Saturday and Sunday, remember every public holiday, and be careful not to double-count a holiday that happens to fall on a weekend. The Working Days Calculator does all of that for you instantly, and it's flexible enough to handle different weekly schedules around the world.
Common Use Cases
Project Planning — You know the deadline, you know the start. Knowing how many actual working days you have helps estimate capacity, slot in reviews, and plan around conferences or holiday freezes.
Payroll and HR — Compute paid working days in a period, count leave without pay, or figure out how many business days a new starter will work in their first partial month.
Legal and Contracts — Many contracts specify deadlines in business days ("within 10 business days of receipt"). Having a tool that respects your jurisdiction's holiday calendar avoids disputes.
SLA and Support — Track ticket response times in working days, excluding weekends and office-closed holidays.
Invoicing and Finance — Calculate payment terms like "net 30 business days" accurately.
Global Work Weeks
Not every country uses Monday-Friday. Many Middle Eastern countries observe Friday-Saturday as the weekend. Israel works Sunday-Thursday. Some organisations even operate six days a week. The calculator lets you toggle each weekday so you can model any schedule.
Handling Holidays
Paste your company or country's holiday list using ISO dates (2025-12-25), one per line. The tool will skip matching days automatically. Holidays that fall on weekends are not double-counted — they're already excluded as weekend days.
Tips
- Keep a master list of your office's holidays for the year so you can paste it into any date range.
- Uncheck "include start" when counting delivery deadlines that start after a contract is signed.
- Combine with our Date Format Converter if your team's holidays come from a spreadsheet in a different format.