Add Business Days Calculator
Add business days calculator
Add or subtract business days with holiday calendar, weekend profile, and include-start controls.
InputsDate & time6 fieldsLive
Result
2026-07-17
Custom policy (Sat-Sun weekend, No holiday calendar). Offset +10 (forward), excluding start date. Start counted: no. Skipped 2 weekend day(s) and 0 holiday day(s).
Live update
Formula
Result date = start date moved by n business-day matches under selected policy Symbol legend
| Symbol | Meaning | Unit | Copy |
|---|---|---|---|
D_{start} | Start date | calendar date | |
n | Business-day offset | business days | |
policy | Weekend profile + holiday calendar + include-start rule | - |
- Choose an SLA preset or custom policy (weekend profile + holiday calendar).
- Move one day at a time in the direction of n and decrement remaining offset only on business days.
- If include-start is enabled and the start date is business-eligible, it can count as day 1.
Example
Worked example: support SLA due date
- 1 Start date = 2026-07-02, offset = +3, preset = Support SLA (8x5, US holidays), include-start enabled.
- 2 Start date counts as day 1, US holiday (2026-07-03) and weekend days are skipped.
- 3 Remaining business days land on 2026-07-07.
Adding 3 business days under this SLA policy gives 2026-07-07.
How
- Choose a start date.
- Enter positive or negative business-day offset.
- Select an SLA preset or custom weekend/holiday policy.
- Choose whether to include the start date as day 1.
- Read the resulting business-adjusted date and skipped-day diagnostics.
Avoid
- Forgetting to switch weekend profile for non-Sat/Sun workweeks.
- Entering decimal business-day values.
- Assuming all local holidays are exhaustive in baseline calendar presets.
FAQ
Can I enter a negative business-day offset?
Yes, negative offset moves backward through weekdays.
Can I include holidays and custom weekend rules?
Yes. Use custom policy controls or SLA presets to change weekend profile and holiday calendar behavior.
What does include start date mean?
When enabled, the start date counts as day 1 only if it is a business day under the selected policy.
Switch
Switch12
No match.