Free Weekday Counter
Count how many of any specific weekday fall between two dates.
What is a weekday counter?
A weekday counter is a free online tool that tells you exactly how many times any specific day of the week appears between two dates — for example, how many Tuesdays fall between January 1 and June 30. It runs entirely in your browser with no signup needed.
Most date calculators tell you the total days between two dates, but they do not break it down by day of the week. This is the tool I reach for when I need to know how many Saturdays are left until an event, or how many Mondays are in a semester for class scheduling. The simple concept of counting by weekday is surprisingly hard to do mentally — try figuring out how many Thursdays are between March 15 and November 1 without a tool. The weekday counter handles specific days (Monday through Sunday) plus bulk counts for all weekdays or all weekend days in a single click.
How it works
The calculator iterates through every single day in your date range from start to end. For each day, it checks the day of the week using the JavaScript Date object's getDay() method, which returns 0 for Sunday through 6 for Saturday. When the day matches your selection, it increments the counter. For example, between January 1, 2026 and January 31, 2026, there are 4 Wednesdays (January 7, 14, 21, 28). You can verify this: January 1, 2026 is a Thursday, so the first Wednesday is the 7th, and they repeat every 7 days after that. If you select "Weekdays (Mon-Fri)", it counts all five weekdays combined. If you select "Weekends", it counts Saturday and Sunday together. The result always shows the total count alongside the date range, so you never lose track of what you asked for.
When to use a weekday counter
Event planners use it to count how many specific weekdays are available for scheduling a recurring meeting or class. Teachers use it to calculate the number of school days between terms — in most US school districts, the academic year has roughly 180 school days, but the exact count of Mondays through Fridays varies by year and start date. Retail managers use it to count how many Saturdays are in a month to plan staffing around peak foot traffic. My most common use case is counting how many weekends remain before a deadline — picking "Saturday" or "Sunday" tells me my remaining weekend days, which is more useful than total calendar days when planning project time. Freelancers also use it to count how many Fridays are in a month for invoice runs.
Common mistakes when counting weekdays
The most common mistake I see is confusing "weekdays" with "working days." Weekdays (Monday-Friday) do not exclude public holidays — a weekday counter will count Good Friday as a weekday even though most people have it off. If you need to exclude holidays, use a working days calculator instead. The second mistake is forgetting whether the start or end date should be included in the count. If your event starts on Monday and ends on Friday, do you count both Monday and Friday? The answer depends on your use case, and this calculator counts both dates by default. The third mistake is assuming the distribution is even — five weekdays in a standard range, but months starting on a weekend have fewer complete weeks.
How to use this calculator
- Pick your date range — Enter a start date and end date. The range can be any length — days, months, or years.
- Select the weekday to count — Choose a specific weekday (Monday, Tuesday, etc.) or choose 'All Weekdays' or 'All Weekend Days'.
- See the result — The exact count appears instantly, along with the total calendar days in the range.
Frequently asked questions
How do I count how many Mondays between two dates?
Enter your start and end date, then select the weekday you want to count. The calculator iterates through every day in the range and tallies how many match your chosen weekday. For example, between January 1 and March 31, 2026, there are 13 Mondays.
How many Fridays are in a year?
In a standard year, there are 52 Fridays (or 53 if the year starts on a Friday in a leap year, or on a Thursday in a common year). 2026 starts on a Thursday, so it has 52 Fridays. 2027 starts on a Friday, so it has 53 Fridays.
How many weekends are between two dates?
The calculator shows the total number of Saturdays and Sundays in your date range. For a full year, that's 104 weekend days. For a month with 30 days starting on a Monday, there are 8 weekend days (4 Saturdays and 4 Sundays).
Can I count weekdays only (Monday-Friday)?
Yes — select 'Weekdays (Mon-Fri)' as the option and the calculator counts all weekdays in your range, excluding Saturdays and Sundays. This is different from working days because a weekday counter does not exclude public holidays like Christmas or Thanksgiving. If you need to skip holidays too, use a working days calculator instead.
How many weekdays are in a year?
A standard year has 261 weekdays (Monday-Friday) on average. In a common year with 365 days, that's 52 weeks × 5 weekdays = 260, plus 1 extra if the year starts on a weekday. 2026 starts on a Thursday, so it has 261 weekdays. 2027 starts on a Friday, also 261. Leap years have 262 if January 1 lands Monday-Friday.
How many weekends are in a year?
A standard year has 52 weekends (104 days — 52 Saturdays and 52 Sundays). Some years have 53 of one weekend day if the year starts on that day. 2026 has 52 Saturdays and 52 Sundays. The calculator can show you the exact weekend distribution for any date range between any two dates you specify.