Move a date by business days
"Your order ships in 3 business days." "The review period is 10 business days from receipt." Deadlines are quoted in business days, but calendars show calendar days — this calculator translates. Starting from any date, it steps forward or backward counting only Monday–Friday days (optionally skipping US federal holidays too) until it has counted the number you asked for, and reports the exact landing date, its weekday, and how many calendar days the move actually spanned.
The counting rule
The start date is never counted, even when it is a business day: 1 business day forward from Friday is Monday, and 5 business days from Friday is the following Friday — which is why the default example (Friday, October 9, 2026, plus 5) lands on Friday, October 16, seven calendar days later. Going backward mirrors the rule exactly. With the holiday option on, weekday federal holidays (using the observed Friday/Monday when a holiday falls on a weekend, for 2024–2028) are stepped over as well. To count the business days inside a period instead, use the Business Days Calculator.
Where this matters
Shipping and delivery promises, legal and regulatory response windows, bank settlement ("T+2" is this exact calculation), project scheduling and probation or notice periods. In all of them, the landing date is what people act on — and it is surprisingly easy to get wrong by counting on fingers across a holiday weekend.
Worked example
From Friday, October 9, 2026, moving 5 business days forward lands on Friday, October 16, 2026 — the weekend in between stretches 5 business days across 7 calendar days.
How to use this calculator
- Enter the start date.
- Enter how many business days to move and pick a direction.
- Tick the holiday option if US federal holidays should be skipped too.
- Read the landing date in the green panel, with its weekday and the calendar span.
Business days vs working days vs banking days
The terms are used loosely, but they usually mean the same Monday–Friday skeleton with different holiday calendars: banking days follow the central bank's calendar, working days follow an employer's, and business days follow the contract's definition. Always check which holiday list a deadline refers to — that detail, not the weekday counting, is where real disputes come from.