Business Days Calculator
Calculate business days between two dates, excluding Saturday and Sunday, with optional start and end date inclusion.
Note: Public holidays are not included in this calculation. Only weekend days (Saturday and Sunday) are excluded.
Calculation Results
How the Business Days Calculator Works
This business days calculator counts any calendar day from Monday through Friday. Saturdays and Sundays are fully excluded.
- Exclude Start/End: Standard calculation. (e.g. Wed to next Wed is 5 business days).
- Include Start: Counts the first day as a business day if it is a weekday.
- Include End: Counts the last day as a business day if it is a weekday.
Practical Example
If you start on Friday, June 5, 2026 and end on Monday, June 15, 2026:
- Standard (Exclude Start & End): 5 business days
- Include Both Start & End: 7 business days (since both are weekdays)
- Total weekend days: 4 days
- Total calendar days: 10 days
Frequently Asked Questions
Why aren't federal or state holidays included?
Holidays differ significantly depending on your geographic location (country, region, or state) and your industry. This initial version does not query a global holidays database to avoid misleading calculations. We plan to introduce customizable holiday lists in a future update.
How are start and end dates handled?
By default, the starting date is not counted (0 business days have passed on day one). Checking the option "Include start date" counts it as a full day of work, as long as it does not fall on a weekend.
What if my starting date is after my ending date?
The calculator will correctly compute the values and return negative numbers, indicating that the duration has passed backwards in time.
Is the calculation private?
Completely. All business day logic runs locally in your browser. No form inputs are transmitted to our servers or stored anywhere.
Is a business days calculator different from a date calculator?
Yes. A normal date calculator counts every calendar day. A business days calculator counts weekdays only, so it is better for work deadlines, delivery windows, invoice terms, and project schedules.
Can I count business days between two dates?
Yes. Enter the start and end dates, then choose whether to include the first day, the last day, or both. The result shows business days, weekend days, and total calendar days for comparison.