About Business Days Calculator
Business Days Calculator is a fast, free online tool for counting working days between two dates, adding business days to a date, or subtracting business days from a date. It automatically excludes weekends and public holidays for multiple countries.
Why We Built It
Existing business day calculators are often slow, cluttered with ads, or limited to US holidays only. We built a tool that is instant (no button click needed), mobile-friendly, and supports multiple country holiday calendars out of the box.
Whether you are a project manager calculating deadlines, an HR professional determining payroll cutoff dates, a legal professional counting filing windows, or a freelancer calculating payment terms \u2014 the Business Days Calculator gives you accurate results in milliseconds.
Key Features
- Three calculation modes \u2014 Count days between two dates, add business days, or subtract business days
- Multi-country holidays \u2014 United States (federal holidays), United Kingdom (bank holidays), India (public holidays) with more countries planned
- Manual holidays \u2014 Add custom holiday dates that should be excluded from the count
- Include end date toggle \u2014 Choose whether to include or exclude the end date in your calculation
- Instant results \u2014 No button clicks needed; results update as you type
- Copy & reset \u2014 Copy results to clipboard or reset to defaults
Who It Is For
- Project Managers \u2014 Calculate exact deadlines for milestones and deliverables
- HR & Payroll \u2014 Determine payroll cutoff dates and PTO accrual periods
- Legal Professionals \u2014 Count court filing windows and response deadlines
- Freelancers & Contractors \u2014 Calculate Net 30, Net 60, and Net 90 payment due dates
- Logistics & Shipping \u2014 Estimate delivery dates excluding weekends and holidays
- Finance \u2014 Calculate interest accrual periods and loan processing times
Our Approach
We believe calculator tools should be fast, private, and free. There are no ads, no signup forms, and no data tracking. All calculations happen locally in your browser. We are committed to keeping the tool accessible to everyone.