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date ± N working days

Business day calculator

Move a date forward or backward by working days, with weekends and your holiday list skipped and every skipped holiday reported.

Short answer: Friday 9 October 2026 plus ten working days isFriday 23 October 2026. Add a holiday on 20 October and it moves to 26 October, because two weekends and one holiday are skipped in between.

Why a due date needs this and not just "+14 days"

Two weeks of calendar days contains two weekends, so a "14-day" deadline lands four working days early or late depending on which day it starts. Contracts and SLAs mean working days; the difference is the whole reason this page exists, and the skipped weekends are implied in the count rather than hidden.

Worked example

An invoice dated 1 October 2026 with 30 business days of credit: thirty working days forward is 13 November 2026. Check it against the working-days calculator and the count comes back to 30 — the two pages are inverses of each other.

Business day questions

What does this calculate?

A date plus or minus N business days: Friday 9 October plus one business day is Monday 12 October, because the weekend is not a business day. A negative count walks backwards, which is how "five working days before the deadline" is answered.

Are holidays included?

The ones you list, in YYYY-MM-DD form. The page reports every holiday it skipped, so a due date can be audited rather than trusted. No holiday calendar is shipped, because those differ by state and year.

Can I count Saturdays?

Yes — some businesses work a six-day week. With Saturdays included, Friday 9 October plus one business day is Saturday 10 October.

How does this differ from the working days calculator?

That page counts the business days between two dates; this one moves a date by a number of them. They are inverse operations, which is why a due date computed here can be verified there.

Related tools

Working days calculatorThe count between two dates.Date difference calculatorYears, months and days between dates.Time duration calculatorHours and minutes rather than days.