Business Days CalculatorCount working days between dates, or add business days to a date

Count the working days between two dates, or find the date N business days after or before any date. Weekends and the observed US federal holidays are skipped automatically, and you can add your own days off. Every skipped day is shown on a calendar.

  • OPM observed holidays
  • Any workweek (Sun–Thu, 6-day)
  • Custom days off
  • Live calendar view
Manzoor Ahmad
Designed, developed & tested by Manzoor Ahmad, calculator developer
Last reviewed
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Business days calculator

Working days of the week
Extra days off (company closures, PTO)

    Business days

    41

    60calendar days
    16weekend days
    3holidays skipped
    8.2work weeks

      Your date range on the calendar

      • Business day
      • Weekend / non-working
      • Holiday
      • Extra day off

      How do you calculate business days between two dates?

      Count every calendar day in the range, then subtract weekend days (Saturdays and Sundays) and any public holidays that fall on weekdays. From November 2 to December 31, 2026 (both dates counted) there are 60 calendar days. Take away 16 weekend days and 3 federal holidays (Veterans Day, Thanksgiving and Christmas) and you get 41 business days. The calculator does this for any range and shows every skipped day on a calendar.

      How to use the business days calculator

      1. Pick a mode. Use Count to find the number of working days between two dates. Use Add / subtract to find the date that is N business days after or before a date, such as a delivery date or a filing deadline.
      2. Choose whether to count the start and end dates. For “how many working days do I have from Monday to Friday?”, count both. For “how many days after the order date?”, leave the start date out.
      3. Set your workweek. Monday to Friday is the default. Tap the day buttons for a Sunday–Thursday week, a 6-day week or a 4-day schedule.
      4. Skip holidays. US federal holidays use the observed dates published by OPM: a Saturday holiday is observed on Friday, a Sunday holiday on Monday. Add your own closures or PTO as extra days off.
      5. Read the calendar. Green is a business day, grey a weekend, orange a holiday and purple your own day off. The bar chart shows how many business days fall in each month.

      Business days formula

      Business days = Calendar days − Weekend days − Weekday holidays − Other days off Calendar days = End date − Start date + 1 (when both dates are counted) Add N days = Step forward one day at a time; count only working days until N

      Worked example: “ships in 5 business days.” You order on Friday, November 20, 2026. Day 1 is Monday the 23rd, then the 24th and the 25th. Thursday the 26th is Thanksgiving, so it is skipped. Friday the 27th is day 4 and Monday the 30th is day 5. Expected ship date: Monday, November 30, 2026, 10 calendar days later. Switch to Add / subtract mode to check it.

      US federal holidays 2026 and 2027 (observed dates)

      These are the eleven legal public holidays under 5 U.S.C. 6103, with the day federal offices actually close when a holiday falls on a weekend. Banks follow the Federal Reserve’s schedule, which can differ when a holiday falls on a Saturday.

      YearHolidayActual dateObserved (day off)
      2026New Year’s DayThu, Jan 1, 2026Thu, Jan 1, 2026
      2026Birthday of Martin Luther King, Jr.Mon, Jan 19, 2026Mon, Jan 19, 2026
      2026Washington’s Birthday (Presidents Day)Mon, Feb 16, 2026Mon, Feb 16, 2026
      2026Memorial DayMon, May 25, 2026Mon, May 25, 2026
      2026Juneteenth National Independence DayFri, Jun 19, 2026Fri, Jun 19, 2026
      2026Independence DaySat, Jul 4, 2026Fri, Jul 3, 2026 (moved)
      2026Labor DayMon, Sep 7, 2026Mon, Sep 7, 2026
      2026Columbus DayMon, Oct 12, 2026Mon, Oct 12, 2026
      2026Veterans DayWed, Nov 11, 2026Wed, Nov 11, 2026
      2026Thanksgiving DayThu, Nov 26, 2026Thu, Nov 26, 2026
      2026Christmas DayFri, Dec 25, 2026Fri, Dec 25, 2026
      2027New Year’s DayFri, Jan 1, 2027Fri, Jan 1, 2027
      2027Birthday of Martin Luther King, Jr.Mon, Jan 18, 2027Mon, Jan 18, 2027
      2027Washington’s Birthday (Presidents Day)Mon, Feb 15, 2027Mon, Feb 15, 2027
      2027Memorial DayMon, May 31, 2027Mon, May 31, 2027
      2027Juneteenth National Independence DaySat, Jun 19, 2027Fri, Jun 18, 2027 (moved)
      2027Independence DaySun, Jul 4, 2027Mon, Jul 5, 2027 (moved)
      2027Labor DayMon, Sep 6, 2027Mon, Sep 6, 2027
      2027Columbus DayMon, Oct 11, 2027Mon, Oct 11, 2027
      2027Veterans DayThu, Nov 11, 2027Thu, Nov 11, 2027
      2027Thanksgiving DayThu, Nov 25, 2027Thu, Nov 25, 2027
      2027Christmas DaySat, Dec 25, 2027Fri, Dec 24, 2027 (moved)
      2027New Year’s Day 2028Sat, Jan 1, 2028Fri, Dec 31, 2027 (moved into 2027)

      Working days per month in 2026 and 2027

      Monday-to-Friday working days after removing observed federal holidays. We computed these with the same engine as the calculator, and they match OPM’s published schedules (249 working days in 2027 once New Year’s Day 2028 is observed on December 31, 2027).

      Month20262027
      Jan2019
      Feb1919
      Mar2223
      Apr2222
      May2020
      Jun2121
      Jul2221
      Aug2122
      Sep2121
      Oct2120
      Nov1920
      Dec2221
      Full year250249

      Business day mistakes to avoid

      Counting the start date for a deadline

      “Within 3 business days of Monday” usually means Tuesday, Wednesday, Thursday. Day 1 is the next working day, not the day of the event.

      Using the actual holiday instead of the observed one

      July 4, 2026 is a Saturday, so the federal day off is Friday, July 3. A plain weekday count would miss it.

      Assuming “business days” is the same everywhere

      Banks, courts, carriers and other countries keep different holiday lists. Add those days as extra days off for an exact answer.

      Forgetting the year-end jump

      When January 1 falls on a Saturday, the holiday is observed on December 31 of the previous year. It happens again in 2027.

      Related calculators

      Working days are only one way to count time. These tools answer the related questions:

      Days Between Dates CalculatorNeed every calendar day, weekends included? Count the full span between two dates.Open Days Between Dates Calculator →Date CalculatorAdd or subtract calendar days, weeks, months or years when weekends do count.Open Date Calculator →Days Until CalculatorTurn a deadline into a live countdown in days, weeks and hours.Open Days Until Calculator →Time Card CalculatorTotal the hours you worked on those business days, with breaks and overtime.Open Time Card Calculator →

      More Date & Countdown calculators in this cluster:

      Manzoor Ahmad

      Manzoor Ahmad

      Calculator Developer · Founder of DexoCalc

      I’m a pharmacist turned web developer with more than 13 years of experience building web tools. In pharmacy work, business days matter every week: insurance prior-authorisation windows and supplier deliveries both run on them. I built this calculator’s holiday engine from the federal statute and OPM’s observed-date rules, then checked it against OPM’s published 2026 and 2027 schedules day by day. If a date looks wrong, tell me.

      Published · Last reviewed · Author profile · Report an issue

      Business days: frequently asked questions

      There are 250 Monday-to-Friday working days in 2026 after removing the 11 observed US federal holidays, and 249 in 2027. The month-by-month table on this page lists each month.

      Usually, yes. In the US a business day normally means Monday through Friday, excluding public holidays. Some businesses, and many countries in the Middle East, work Sunday to Thursday, so the calculator lets you choose any working days of the week.

      Only if you want it to. To count every working day in a period (for example, leave days), turn on both ‘count the start date’ and ‘count the end date’. For deadlines and delivery estimates, the start date is normally not counted. Add / subtract mode always starts counting from the next working day.

      Not in a standard Monday-to-Friday week. For a 6-day workweek, switch on Saturday in the working-days buttons and the calculator will count it.

      The calculator uses the federal observed-date rule from OPM: a holiday on Saturday is observed on the Friday before, and a holiday on Sunday is observed on the Monday after. That observed weekday is the one skipped.

      Count 5 to 7 working days starting the day after your order, skipping weekends and holidays. An order placed on a Friday before a Monday holiday can take more than 9 calendar days. Enter your order date in Add / subtract mode to get the exact dates.

      Start from the given date and move forward one day at a time, counting only working days, until you reach the number you need. Weekends, holidays and your extra days off are skipped. The calculator does this instantly and lists every holiday it skipped.

      Yes. Use ‘Extra days off’ to add any date, such as a company shutdown, the day after Thanksgiving, or vacation days. They show in purple on the calendar and are left out of the count.

      Calendar days count every day, including weekends and holidays. Business days count only working days. For a straight day count with no exclusions, use the days between dates calculator.

      Sources & references

      1. Federal Holidays (schedules and in-lieu-of rules), US Office of Personnel Management
      2. 5 U.S. Code § 6103: Holidays, Legal Information Institute, Cornell Law School
      3. Federal Reserve Holiday Schedules, Board of Governors of the Federal Reserve System
      4. ISO 8601: Date and time format, International Organization for Standardization

      Holiday dates follow the federal schedule. State holidays, court calendars, bank closures and carrier schedules can differ, so add those as extra days off. For legal deadlines, confirm the counting rule with the court or agency involved.

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