Date & Time

Day of Week Calculator

Find the day of the week for any date directly in your browser. Check whether a date is Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, or Sunday.

Day of Week Calculator

Find the day of the week for any date directly in your browser. Check whether a date is Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, or Sunday.

This tool runs in your browser. Your input is processed locally and is not uploaded.

About this Tool

Use this free day of week calculator to check the weekday for any date. Enter a past or future date and instantly see whether it falls on a Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, or Sunday.

Conversion Formula

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The weekday is calculated from the selected calendar date using the browser’s date logic. The result is mapped to the seven weekdays and can also be shown as a weekday number.

Examples

Find what day of the week your birthday falls on this year
Check whether 2026-12-24 is a weekday or weekend day
Find the weekday for a historical or future date

Frequently Asked Questions

What is a day of week calculator?

A day of week calculator tells you which weekday a selected date falls on.

FAQ

Can I use it for future dates?

Yes. You can calculate the weekday for dates in the past, present, or future.

FAQ

Does it show weekends?

Yes. The result can indicate whether the selected date is a weekday or a weekend day.

FAQ

Does the result depend on time zone?

For normal calendar dates, the weekday is based on the selected date. Time-zone-specific date changes only matter when converting exact times between time zones.

FAQ