How do I count business days between two dates?

Enter a start and end date. The business days calculator subtracts all Saturdays and Sundays, returning the exact number of working days (Monday–Friday) in the period.

What is the difference between business days and calendar days?

Calendar days count every day including weekends. Business days count only weekdays (Monday through Friday). A full week has 7 calendar days but only 5 business days.

Does the business days calculator include public holidays?

The calculator excludes weekends by default. Public holidays are not automatically excluded as these vary by country and industry. For holiday-aware calculations, manually exclude those dates.

How many business days are in a month?

A typical month has 20–23 business days depending on how many weekends it contains. February averages 20 business days, while months with 5 full work weeks can have 23.

How many business days are in a year?

A standard year has 260–262 business days excluding weekends only. After subtracting country-specific public holidays (typically 8–14 days), most countries have 246–254 working days per year.

How do I add 10 business days to a date?

Use this calculator to find the date that falls exactly 10 business days (Monday–Friday) after a given start date. Enter the start date, then count forward until 10 weekdays have passed — the calculator does this instantly.

Do all countries use Monday–Friday as business days?

No. In many Middle Eastern countries, the official work week is Sunday–Thursday, making Friday and Saturday the weekend. In Israel, the work week also runs Sunday–Thursday. This calculator uses the Monday–Friday convention standard in North America, Europe, and most of Asia-Pacific.

How are business days used in shipping and logistics?

Carriers typically quote delivery times in business days, excluding weekends and carrier-observed holidays. ''3 business day shipping'' from a Monday order usually arrives Thursday or Friday, not Wednesday.

What is T+2 settlement in finance?

T+2 means a trade settles two business days after the transaction date (T). If you buy a stock on Monday, it settles Wednesday. If you buy on Thursday, it settles the following Monday, skipping the weekend.

Business Days Calculator

Count working days between two dates, excluding weekends.

Start Date

End Date

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Date Difference Date Add/Subtract

Reviewed by

Priya Sharma

Calendar Systems & Cultural Time Expert

· MA Cultural Anthropology, Oxford· Research Fellow, Time & Culture Institute· Author of 'The Global Calendar' (2022)

About the Business Days Calculator

Business days (also called working days or trading days) are weekdays — Monday through Friday — excluding weekends. They are the standard unit of time for commerce, law, and government because they reflect when people and institutions are typically available to transact business.

While a calendar week has 7 days, a business week has only 5 — meaning a 30-calendar-day month contains roughly 22 business days, and a full year contains approximately 260 working days before accounting for public holidays.

Where Business Days Are Used

Legal & regulatory deadlines

Court filing windows, regulatory response periods, and contract notice requirements are commonly expressed in business days. A ''5 business day'' response period after a Friday deadline ends the following Friday, not the following Wednesday.

Banking & finance

Wire transfers settle in T+1 or T+2 business days. Stock trades settle in T+2. Cheques clear in 2–5 business days. Interest on overnight rates is quoted per business day.

Shipping & logistics

Carriers quote delivery times in business days, excluding weekends and observed holidays. A 3-business-day shipment placed Thursday typically arrives Tuesday, not Sunday.

Employment & payroll

Notice periods, payroll cycles, and statutory deadlines — such as the 3-day right-to-rescind period on some contracts — are counted in business days, not calendar days.

Business Days Per Month (2026 Reference)

Month	Calendar Days	Business Days	Weekend Days
January 2026	31	22	9
February 2026	28	20	8
March 2026	31	22	9
April 2026	30	22	8
May 2026	31	21	10
June 2026	30	22	8

Excludes weekends only. Public holidays vary by country.