Free Business Days Calculator
Count working days between two dates, or find the date that is N business days away — weekends and holidays handled for you.
Something not working?
Tell us what went wrong — it helps us fix the tool. Only what you type below is sent; your dates never leave your device.
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| Feature | Free | Pro |
|---|---|---|
| Count business days / add & subtract days | Yes | Yes |
| Custom workweeks, US federal + own holidays | Yes | Yes |
| Copy the result | Yes | Yes |
| More holiday calendars (UK, EU, Canada, Australia) | — | Yes |
| Batch: a whole list of deadlines at once | — | Yes |
| Ads | Shown on page | Ad-free |
| Updates | — | Lifetime free updates |
Frequently asked questions
Does the count include the start and end dates?
Yes. Counting from Monday to Friday gives 5 business days — the same as Excel's NETWORKDAYS. When adding days, the start date itself is not counted: adding 1 business day to a Friday gives the following Monday, like Excel's WORKDAY.
How are US federal holidays handled?
The 11 federal holidays are computed for each year, using the federal observed-date rule: a holiday that falls on a Saturday is observed on the Friday before, and one that falls on a Sunday on the Monday after. A holiday that lands on a day that is already off (a weekend, or outside your workweek) is not subtracted twice. Other countries' holidays are not built in — add them to "My holidays" instead.
What counts as a business day?
Whatever your workweek says, minus your holidays. The default is Monday–Friday; Sunday–Thursday and Monday–Saturday presets cover other common schedules, and "Custom" lets you pick any combination of days. A holiday only removes a day that would otherwise have been a workday.
Are my dates uploaded anywhere?
No. The calculation runs entirely in your browser. Nothing is sent to a server or stored — the only thing that leaves your device is the result, if you choose to copy it.
Can this settle a contract or court deadline?
Use it as a planning aid, not a legal answer. Contracts, courts and agencies define business days differently (some exclude the start date, some count only their own holiday calendar). Check the wording that governs your deadline before relying on any count.