Working days between two dates
This tool counts how many working days fall between two dates, skipping weekends. It is useful for project timelines, delivery estimates, notice periods, billing, and any plan that runs on business days rather than calendar days.
How it works
The calculator steps through every day from the start date to the end date and counts each one, unless it is a weekend that you have not chosen to include. By default both Saturday and Sunday are excluded, but you can tick either to count it as a working day — handy for six-day weeks or weekend shifts. The count is inclusive of both ends, so a Monday-to-Friday range is 5 working days. Public holidays are not deducted, since they vary by country, so subtract any that fall on a weekday yourself.
| Setting | Effect |
|---|---|
| Default | Excludes Saturday and Sunday |
| Count Saturdays | Saturday becomes a working day |
| Count Sundays | Sunday becomes a working day |
Worked example
From Monday 2 June to Friday 20 June spans 19 calendar days. Those 19 days contain 4 weekend days (Saturday 7, Sunday 8, Saturday 14, Sunday 15), leaving 15 working days, counting both the first Monday and the last Friday.
Common uses for working-day counts
Project and deadline planning. Contract deadlines, regulatory filing windows, and software sprint planning all run on business days. A “20 business day” response period has a very different end date depending on when it starts.
Delivery and lead-time estimation. Courier, freight, and supply chain lead times are quoted in business days. Knowing how many business days are between an order date and a promised delivery date — and whether that falls before a month-end cutoff — is a routine logistics calculation.
Employment notice periods. Many employment contracts specify notice periods in working days (for example, a 14-working-day notice). Starting a countdown from a Monday versus a Thursday produces meaningfully different calendar end dates.
Invoice payment terms. Net-30 and Net-60 payment terms sometimes mean calendar days and sometimes mean business days, depending on the contract. If your contract specifies business days, this tool lets you find the exact payment due date from the invoice date.
Legal and regulatory deadlines. Court filings, regulatory submissions, and statutory response periods often run in business days. A missed deadline can have significant consequences, so an accurate count matters.
Handling public holidays
This calculator counts weekends but does not subtract public holidays, because public holidays vary by country, region, and year. To get the most accurate count for a specific jurisdiction:
- Count the working days using this tool
- Identify which public holidays fall on weekdays within your date range
- Subtract that number manually
For example, if your range includes a bank holiday Monday, subtract 1 from the tool’s result to get the true business-day count.
The calculation runs entirely in your browser and nothing is uploaded.