📆 Business Days Calculator

Count weekdays between two dates, excluding weekends.

About this tool

Counts the number of weekdays (Monday through Friday) between a start date and an end date, inclusive of both endpoints — useful for estimating delivery times, project timelines, or payment terms that exclude weekends.

Public holidays are not excluded, since holiday calendars vary widely by country, region, and organization — factor those in separately if relevant to your situation.

Worked example

Between a Monday and the following Friday (5 calendar days) there are 5 business days; between a Friday and the following Monday (4 calendar days including a weekend) there are just 2.

How to use it

Pick a start date.
Pick an end date.
Press Count business days.

Tips

This counts both the start and end date if they fall on a weekday — a Monday-to-Monday span one week apart counts as 6 business days, not 5.
For shipping and delivery estimates, many carriers quote "business days" the same way this tool counts them — weekdays only, holidays handled separately.
If your organization observes specific holidays, subtract those days manually from the result.

FAQ

Does this exclude public holidays?

No — it counts Monday through Friday only. Holiday calendars vary too much by country and organization to build in a single default, so subtract known holidays manually.

Does it count both the start and end date?

Yes, the count is inclusive of both endpoints if they fall on a weekday.

Can I use this for payment or contract terms like "net 10 business days"?

Yes — pick your start date and count forward, or use the Date Add/Subtract Calculator if you need to find the actual resulting date rather than a day count.

From the blog: getting the most out of this tool

"Business days" is one of those terms everyone uses confidently until they actually have to count them across a weekend, and the inclusive-vs-exclusive endpoint question trips up spreadsheet formulas as often as it trips up people.

We kept holidays out of the default calculation on purpose rather than guessing at a single country's calendar — a US federal holiday list would be quietly wrong for half the world's users, so an honest weekday-only count felt like the more broadly useful default.

📖 Want the fuller explanation?

See Counting Business Days & Deadlines for the reasoning behind this calculation, with worked examples.