What is business days calculator?
Business days are the days on which most offices work. Contracts, delivery promises and legal notices often use them, so you need to know how many there are between two dates.
This calculator supports the Saturday and Sunday weekend, the Friday and Saturday weekend used in some Gulf countries and a Sunday only week.
How to use the business days calculator
- Choose the start and end dates.
- Pick your weekend days.
- Read the business days, weekend days and total days.
How the business days calculator works
The tool steps through every date from the start to the end. Days that fall on a weekend day are counted as weekend days and the rest as business days. The end date is included unless you turn it off.
Worked example
Common uses of the business days calculator
- Delivery and project deadlines.
- Notice periods.
- Payment terms.
- Leave planning.
- Legal and visa timelines.
Tips and common mistakes
Subtract public holidays by hand. They differ by country and year.
Check whether your contract counts the start day.
Background: what to know before you rely on it
Business days appear in contracts to avoid arguments about weekends and holidays. A promise of delivery in 5 business days does not include Saturday and Sunday, so it usually means a full calendar week. Different countries have different weekends, and some businesses run on a six day week, so always agree on the definition. Public holidays are the other source of difference and include movable dates such as Eid, which depend on moon sighting. Add a buffer for those.
Private, free and fast
This tool runs entirely in your browser. What you type or choose is not uploaded to a server and is not saved after you close the page, which keeps it fast and private. It is free to use as often as you like. See more in all date and time tools, or browse the full list of tools.
Frequently asked questions
Does it remove public holidays?
No. Holidays vary by country, so subtract them yourself.
Which weekend should I choose?
Saturday and Sunday is the most common. Choose Friday and Saturday if your workplace follows that week, as in some Gulf countries.
Does it count the start date?
Yes.
Can I swap the dates?
Yes. The tool orders them for you.
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Results are for information and education. For legal, financial, medical or security decisions, check with a qualified professional. For legal deadlines, confirm how your contract or court counts days.