Move from a starting date by a business-day count without counting the starting date.
Calculate with the Business Days Calculator
Dates are validated as calendar components before calculation.
Business Days Calculator results
How to use the Business Days Calculator
- Enter the required calendar dates, times, or rule values.
- Choose the counting convention or mode where offered.
- Select Calculate or press Enter.
- Review the result, basis, and limitations before using it.
Worked example
Adding 10 business days skips selected weekends and any manually entered weekday holidays.
Assumptions
Date-only calculations use the proleptic Gregorian calendar and ignore clock time. Elapsed-time calculations and selected-zone conversions state their time basis separately.
Limitations
- The starting date is not counted.
- Movement is limited to 100,000 business days and no holiday API is used.
Frequently asked questions
What date basis does the Business Days Calculator use?
The result uses calendar dates unless the page explicitly describes elapsed time or a selected time zone.
Can daylight-saving time change calendar-day totals?
No. Date-only calculations use normalized UTC day numbers. Elapsed timestamp and time-zone calculations are explicitly handled separately.
Are entered dates stored?
No. Calculations run in your browser and the entered dates are not saved or sent anywhere.