Date calculator
Add Business Days Calculator
Add or subtract business days from a date. The calculator skips weekends and can also skip listed US federal holidays.
Configure calculation
Set a start date, choose add or subtract, and pick common business intervals.
2026-05-20
Wednesday
14 days
2.0 wks elapsed
4 days
Sat & Sun skipped
0 holidays
US Federal observed
Day-by-Day Calculation Audit
Chronological verification of business days counted and non-working days skipped.
| Step | Date | Day | Classification |
|---|---|---|---|
| Start | 2026-05-06 | Wednesday | Start date |
| #1 | 2026-05-07 | Thursday | Business day 1 |
| #2 | 2026-05-08 | Friday | Business day 2 |
| Skip | 2026-05-09 | Saturday | Weekend (Skipped) |
| Skip | 2026-05-10 | Sunday | Weekend (Skipped) |
| #3 | 2026-05-11 | Monday | Business day 3 |
| #4 | 2026-05-12 | Tuesday | Business day 4 |
| #5 | 2026-05-13 | Wednesday | Business day 5 |
| #6 | 2026-05-14 | Thursday | Business day 6 |
| #7 | 2026-05-15 | Friday | Business day 7 |
| Skip | 2026-05-16 | Saturday | Weekend (Skipped) |
| Skip | 2026-05-17 | Sunday | Weekend (Skipped) |
| #8 | 2026-05-18 | Monday | Business day 8 |
| #9 | 2026-05-19 | Tuesday | Business day 9 |
| #10 | 2026-05-20 | Wednesday | Target date (Day 10) |
How Business Day Calculation Works
A business day (or working day) typically refers to any official working day from Monday through Friday, excluding weekends (Saturdays and Sundays) and officially recognized public holidays. When computing delivery windows, service-level agreements (SLAs), or statutory notice periods, business days provide a standardized timeline that reflects actual commercial operations.
Handling US Federal Observed Holidays
When a fixed-date federal holiday falls on a weekend, standard federal guidelines shift observance: holidays on Saturday are observed on the preceding Friday, while holidays on Sunday are observed on the following Monday. Toggling the holiday option automatically accounts for these observed dates.
Common Workplace & Legal Applications
Counting business days is essential for legal cooling-off periods (e.g., 3-day right of rescission), ACH direct deposit settlement times (typically 1 to 2 business days), real estate escrow closing dates, and shipping courier guarantees.
More work calendar tools
Related tools
Use these calculators when your next step is a date count, a workday offset, or a calendar export.
Business Days Calculator
CSV + ICSCount working days between two dates and export the matching dates.
Business Days Between Dates
CSV + ICSUse the same workday count flow with a search-focused date range page.
Date Calculator
CSVCalculate total days between dates, preview weekday/weekend and a business-day summary, and export as CSV.
Days Between Dates Calculator
CSVCount total calendar days between dates and export the full date list as CSV.
Working Days Calculator
CSV + ICSCalculate working days between two dates by excluding weekends and (optionally) US federal holidays, then export.
Add Days to Date Calculator
CSVAdd or subtract calendar days from a date, preview weekday/weekend, and export as CSV.
Working Days in 2026
CSV + ICSPreview and export the full 2026 workday list.
Working Days in 2027
CSV + ICSPreview and export the full 2027 workday list.
Week Number Calculator
CSVFind ISO week number, US week number, weekday, and day of year.
Week Numbers 2026
CSVBrowse all 2026 week numbers with start/end dates in ISO or US systems.
Week Numbers 2027
CSVBrowse all 2027 week numbers with start/end dates in ISO or US systems.