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Day of Week Calculator

Find out what day of the week any date falls on — past, present or future.

Fun uses

Find what day you were born, or what day a future anniversary falls on.

How It Works

Have you ever needed to know what day of the week a particular date falls on — for a historical event, a future appointment, or just satisfying a nagging curiosity? This tool returns the answer instantly for any date in history or the future.

Enter any date and it tells you the day of the week it falls on. It works across centuries, correctly handling the Gregorian calendar reform of 1582 for historical dates.

Commonly used for confirming what day a birthday, anniversary, or event falls on, checking which day of the week a future date lands on for scheduling, and historical curiosity.

How to use it

  1. Enter any date.
  2. Click Calculate to see the day of the week.

Frequently Asked Questions

Enter your date of birth and the calculator will tell you instantly.

Enter the date of any historical event and you'll get the day of the week. The calculator correctly handles dates back through the adoption of the Gregorian calendar.

Enter December 25 of the current year and you'll see the day immediately.