Business Days Calculator
Business days calculator
Count business-day equivalents with holiday calendars, weekend profiles, and SLA credits.
InputsDate & time7 fieldsLive
Result
10 business day(s)
Custom policy (Sat-Sun weekend, US holidays). Signed difference: +10. Between-day count: 10. Start credit: 0. End credit: 0. Skipped 5 weekend day(s) and 0 holiday day(s).
Live update
Formula
Business-day equivalent = full business days between endpoints + start credit + end credit Symbol legend
| Symbol | Meaning | Unit | Copy |
|---|---|---|---|
B_{eq} | Business-day equivalent count | business days | |
I_{business}(d) | 1 when day d is not weekend/holiday in selected policy | 0 or 1 | |
c_{start}, c_{end} | Partial credit for start/end dates (0, 0.5, or 1) | business days |
- Evaluate the selected policy: weekend profile, holiday calendar, and endpoint credits.
- Count full business days strictly between start and end dates.
- Apply start/end credits for SLA-style half-day or full-day counting and return absolute plus signed direction.
Example
Worked example: support SLA window (US holidays)
- 1 Start = 2026-07-02, End = 2026-07-07, policy = Support SLA (8x5, US holidays).
- 2 US observed holiday on 2026-07-03 is excluded, weekends are excluded, and start day uses 0.5 credit.
- 3 Between-day count = 1 (Monday only), start credit = 0.5, end credit = 1.0.
Business-day equivalent = 2.5 for this SLA window.
How
- Enter start and end dates.
- Pick an SLA preset for common support/operations policies, or choose Custom policy.
- For custom policy, choose weekend profile, holiday calendar, and start/end day credit values.
- Review business-day equivalent output, signed direction, and skipped weekend/holiday diagnostics.
Avoid
- Comparing this output directly to calendar-day difference without checking policy settings.
- Forgetting to adjust weekend profile for teams that do not use Saturday/Sunday weekends.
- Using full-day endpoint credits when SLA requires half-day intake handling.
FAQ
Can I include holidays in the count?
Yes. Set holiday calendar to None if you want weekends-only logic, or select US/UK/Canada/India to exclude baseline public holidays.
How do partial business days work?
Use start-day and end-day credit values (0, 0.5, or 1). This lets you model half-day SLA intake and deadline windows.
Can end date be before start date?
Yes. The result card still shows absolute count, and helper text includes signed direction.
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