DataToolsLab
Date & Time Tools

Business Days Calculator

Add or count business days, skipping weekends and holidays.

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What is Business Days?

A workday-aware date calculator: either the count of Monday–Friday days between two dates, or the date you land on after adding a number of business days.

How it works

Weekends (Saturday/Sunday) are skipped automatically; an optional comma-separated holiday list lets you exclude specific dates.

  1. Enter your input. Type or paste your input into the field above — the tool responds instantly.
  2. Review the result. Output updates live as you type. Everything runs entirely in your browser.
  3. Copy or download. Use the Copy button to grab the result, or Download to save it as a file.

Examples

Delivery estimate

Order on a Wednesday with 5-business-day shipping: the arrival date lands on the following Wednesday, skipping the weekend.

Common mistakes

Forgetting public holidays

Weekends aren't the only non-business days. The calculator can exclude configured holidays so estimates match reality.

Frequently asked questions

Which days count as business days?

Monday through Friday by default, excluding any holidays you add to the list.

Can I subtract business days to find a start date?

Yes — work backwards from a deadline to find the last business day you can start a task.

Are holidays configurable per country?

You can add and remove individual dates. There is no automatic per-country holiday database, so verify your list for the region you need.

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