The Days in a Month Calculator is a quick and easy tool designed to tell you exactly how many days are in any given month of any year. Whether you’re planning events, managing a schedule, or just curious about leap years, this calculator gives you an accurate result in seconds.
To use the calculator, select a month and enter a year. With one click, it tells you how many days are in that month and whether it’s a leap year if February is selected. This feature is particularly useful for understanding how February shifts between 28 and 29 days depending on the year.
Behind the scenes, the calculator uses built-in date functions to determine the number of days, eliminating guesswork. For February, it applies leap year rules:
A year is a leap year if it’s divisible by 4
Except years divisible by 100, unless they’re also divisible by 400
This ensures the calculation is accurate for all years between 1 and 9999.
In addition to displaying the number of days, the calculator also shows a clean, responsive calendar for the selected month. The current day is highlighted, helping you see today’s position in the month. This is useful for visual planning and quickly spotting weekends or weekdays.
If February is selected, a note appears confirming whether it’s a leap year and what that means for the number of days.
You’ll also get a small historical or cultural fact related to the selected month—adding a touch of educational value and interest.
This tool is ideal for:
Teachers and students learning about the calendar
Event planners and professionals working with schedules
Developers who need to verify date logic
Anyone curious about how the calendar system works
It’s user-friendly, responsive across devices, and informative without unnecessary distractions.
The Days in a Month Calculator is more than just a date tool. It combines precision, ease of use, and educational tidbits to create a well-rounded experience. Try it out to instantly find how many days are in any month, in any year—no math required.
Find out how many days are in any month, including leap year calculations
