Weekday Calculator

Counting weekdays

Weekdays are Monday to Friday. This calculator counts them between two dates without removing holidays, which is what most people mean by “how many weekdays”. It counts the days after the start date up to and including the end date, the same rule as the rest of DayMath; tick “Count the start date” to include both ends.

For example, November 1 to November 30, 2026, counting both ends, has 21 weekdays. Two of them, Veterans Day and Thanksgiving, are federal holidays, so the business-day count for the month is 19.

How many Mondays (or any day)

The table under the result counts each day of the week in the same range. It answers questions like how many Fridays are in a quarter or how many Mondays a weekly meeting will fall on. November 2026 has 5Mondays: the 2nd, 9th, 16th, 23rd and 30th.

Day of the week for any date

Pick a date to see its weekday, its day number in the year and its ISO week number. ISO weeks start on Monday, and week 1 is the week that holds the year’s first Thursday, so January 1 can belong to the last week of the previous year: Friday, January 1, 2027 is in ISO week 53 of 2026.

Weekdays in a year

A year is 52 weeks plus one or two days, so it always has 260 to 262 weekdays: 2026 has 261, 2027 has 261, 2028 has 260. The leftover day or two decides it: 2026 starts on a Thursday, and 2028 is a leap year starting on a Saturday. Removing the federal holidays that fall on a weekday gives the business-day totals: 250 in 2026, 249 in 2027, 250 in 2028.

Weekdays in each month of 2026

Counting both the first and last day of each month, 2026 has 22 weekdays in January, 20 weekdays in February, 22 weekdays in March, 22 weekdays in April, 21 weekdays in May, 22 weekdays in June, 23 weekdays in July, 21 weekdays in August, 22 weekdays in September, 22 weekdays in October, 21 weekdays in November, 23 weekdays in December. A month has 20 to 23 weekdays: 28 days always give 20, and the extra days of longer months add up to three more depending on where the weekend falls.

Days between weekdays

To find how many days it is from one weekday to the next occurrence of another, count forward. Saturday to Wednesday is 4 days and Friday to Monday is 3. The same day is 0, and the next one is a week away.

Related tools

• Business day calculatorWeekdays minus holidays
• Business day calendarEvery workday of the year, numbered
• Days worked calculatorCustom workweeks and days off
• Weekdays until a dateCountdown without weekends