Day of the Week Calculator
Enter a date and instantly see which day of the week it falls on.
A day of the week calculator tells you whether a date falls on Monday, Tuesday, Wednesday, Thursday, Friday, Saturday or Sunday. It is useful for planning events, checking historical dates and organizing schedules.
Choose a date and calculate its weekday. The result uses the calendar date you enter and does not depend on your device clock.
Enter the values you want to compare or calculate, then use the result as a practical reference. The calculator runs in your browser and does not require an account.
This tool also fits into a wider set of practical utilities. Depending on what you are trying to calculate or measure next, you can continue with Week Number Calculator, Julian Date Calculator, Days in a Month Calculator and Leap Year Calculator. For the complete collection, visit the utility tools homepage and choose another tool when your task changes.
How to use this calculator
- Enter your values. Select the dates or numbers required by the calculator.
- Check the inputs. Make sure the dates are in the order and range you intend to calculate.
- Calculate the result. The result appears instantly in the calculator above without submitting a form.
- Use the result. Apply the result to your schedule, deadline, planning or date calculation.
How the calculation works
Enter the values you want to compare or calculate, then use the result as a practical reference. The calculator runs in your browser and does not require an account. The calculation is performed locally in your browser, so the page can return a result immediately after you change the inputs.
Things to know about date calculations
Calendar calculations can differ depending on whether a result is treated as an elapsed interval or an inclusive count. This site uses clear calendar-date rules and explains important assumptions where they affect the result. Business-day calculations on this page exclude weekends but do not automatically remove public holidays.
Frequently asked questions
How do I find the day of the week for a date?
Enter the date in the calculator and it will return the corresponding weekday.
Does the calculator work for past dates?
Yes. You can enter past, present or future calendar dates.