DayplanlyHow the business days calculator works
Pick a start and end date. The calculator walks through every day in the range and counts the ones that are not weekend days and not holidays. By default both the start and end dates are included, which is how most people count "how many working days do I have". Untick them to count only the days between the dates.
Which holidays are excluded?
When the US holiday box is ticked, the 11 US federal holidays are removed using their observed dates: when a holiday falls on a Saturday it is observed on the Friday before, and when it falls on a Sunday it moves to the Monday after. Those holidays are New Year's Day, Martin Luther King Jr. Day, Washington's Birthday, Memorial Day, Juneteenth, Independence Day, Labor Day, Columbus Day, Veterans Day, Thanksgiving Day and Christmas Day. Not in the US, or your company closes on other days? Untick the box and type your own days off.
Common uses
- Working out how many days a project or sprint really has
- Counting notice periods, invoice terms and response deadlines
- Payroll and leave planning: working days in a month or year
- Shipping and SLA windows measured in business days
Need the opposite, a date that is N business days away? Use the deadline calculator.
Frequently asked questions
What counts as a business day?
Any Monday to Friday that is not a public holiday. If your week includes Saturdays, tick “Saturday is a work day”.
Does it include the start and end date?
Yes by default. Untick “Include start date” or “Include end date” to count only the days in between.
How many business days are in a year?
It depends on the year and your holidays. For 2026 in the US: 261 weekdays minus 11 federal holidays = 250 business days. Select the full year above to check any year.
Are state or bank holidays included?
No, only the 11 US federal holidays. Add any state, bank or company holidays in the “Extra days off” box.
Is my data sent anywhere?
No. Everything is calculated in your browser and your last inputs are saved only on your device.
Last updated 2026-10-26. Runs entirely in your browser; see our privacy note.