Working Days Calculator

To count business days between two dates, take every calendar day in the range, remove the Saturdays and Sundays, then remove any public holidays that land on a weekday.

Worked example: from Monday 1 June 2026 to Friday 12 June 2026 there are 12 calendar days; remove the weekend of 6–7 June and you have 10 business days, since no US federal holiday falls in that window.

The fiddly part is the boundaries — decide whether the start date itself counts and whether the end date is inclusive.

This calculator counts the days across your range and shows:

• calendar days
• weekend days skipped
• holidays skipped

so you can see exactly how the total was reached. Enter any two dates above to get the count instantly.

Calendar days count every day on the calendar — weekdays, weekends and holidays alike. Business days (working days) count only the days most offices, banks and courts are open: Monday to Friday, minus public holidays.

The gap matters because a deadline worded as '10 business days' is much longer in real time: starting on a Friday, 10 business days is 14 calendar days, and one mid-period holiday pushes it to 15.

Shipping, contracts, refunds and legal notice periods are almost always quoted in business days, while interest, rent and the age an age calculator reports are counted in calendar days.

Always check which unit a deadline uses before planning around it.

Most months hold 20 to 23 working days. A full year has 260 or 261 weekdays (52 weeks × 5, plus an extra day or two depending on how the year falls); after subtracting the public holidays that land on weekdays, the practical figure is about 250 working days in the US, slightly higher in countries with fewer national holidays.

Because the count shifts with the day of the week each month begins on, and with whether holidays fall on weekends, it is worth calculating the exact number for the specific period you are budgeting, billing or staffing rather than assuming a flat average.

Enter the first and last day of any month above for its precise working-day count.

The reverse calculation — adding a number of business days to a start date — answers questions like 'if I order today, when does a 5-business-day delivery arrive?' or 'what is the filing deadline 14 business days from now?'

Switch to Add Business Days mode, enter the start date and the number of working days, and the calculator steps forward day by day, skipping weekends (and holidays if the toggle is on) until it has counted the requested number, then returns the target date.

This avoids the classic error of simply adding the number to the calendar date, which ignores every weekend and holiday in between.

Public holidays differ by country, so the working-day count for the same date range changes depending on where you are.

• The US observes 11 federal holidays; this calculator's holiday toggle uses the 10 most commonly observed for business purposes.
• The UK has 8 bank holidays in England and Wales, with Scotland and Northern Ireland differing.
• Canada's statutory holidays vary by province on top of national ones like Canada Day and Christmas.
• Australia's public holidays differ by state and territory, with extras such as state shows and a Labour Day that falls on different dates.

If you are counting business days outside the US, turn the US-holidays toggle off to count Monday-to-Friday weekdays only, then subtract your own jurisdiction's public holidays; when a deadline straddles countries, a time zone converter helps you pin down the exact cut-off hour on each side.

Three errors account for most miscounts.

• First, off-by-one on the boundaries: decide up front whether the start date counts as day zero or day one, and whether the end date is included.
• Second, forgetting a mid-period holiday — a single overlooked public holiday makes every downstream date wrong.
• Third, using the wrong country's holiday calendar, common when two parties in different countries share a deadline.
• A fourth, subtler trap is the observed-date rule: when a fixed holiday like 4 July or 25 December lands on a weekend it is observed on the nearest weekday, which can move a business day in or out of your range.

This calculator handles weekends, observed dates and the holiday toggle automatically so these mistakes don't creep in.

Business days are the default unit across many fields.

• In finance, securities now settle in T+1 business day in the US and Canada.
• In logistics, carriers quote transit time in business days, so a 3-day shipment ordered on Thursday often arrives the following Tuesday.
• In law, court and contractual deadlines are frequently specified in business days, and so are notice periods in many employment contracts.
• In payroll and HR, pay cycles, probation periods and leave accrual can be measured in working days.

Anywhere weekends and holidays should not count toward a deadline, the business-day count is the right measure — and the exact number is worth confirming rather than estimating.

Many contracts, legal deadlines, shipping estimates, and payroll cycles are defined in business days rather than calendar days.

A '10 business day' deadline starting on a Friday actually spans 16 calendar days (two full weeks plus weekends). Add a holiday and it stretches to 17.

Our working days calculator eliminates guesswork by automatically excluding weekends and US federal holidays, giving you the exact business day count or target date you need.

The calculator includes all 10 US federal holidays for both 2025 and 2026:

• New Year's Day
• Martin Luther King Jr. Day
• Presidents' Day
• Memorial Day
• Independence Day
• Labor Day
• Columbus Day
• Veterans Day
• Thanksgiving
• Christmas Day

Fixed-date holidays that fall on a weekend are observed on the nearest weekday per OPM rules — Saturday holidays shift to Friday, Sunday holidays shift to Monday.