Day of Week Calculator

Find out what day of the week a date falls on

Day of Week
Day Number (0=Sun)
Is Weekend? (1=Yes)

The day of week calculator tells you which day of the week any date falls on—past, present, or future. This is useful for event planning, historical research, scheduling, or satisfying curiosity about important dates.

Enter any date and instantly know whether it's a Monday, Tuesday, etc. The calculator also indicates whether it's a weekend day, helpful for planning around work schedules.

Perfect for answering questions like "What day was I born?", "What day is Christmas this year?", or planning events around preferred weekdays. Also useful for historical research or schedule planning.

Quick Tips

  • Bookmark your most-used calculators for quick access
  • All calculations run locally in your browser
  • Share results easily with the copy button

Frequently Asked Questions

The calculator works for dates from 1900 to 2100.

Yes, within the range, though very old dates used different calendar systems.

Yes, just enter your birth date.

0=Sunday, 1=Monday, through 6=Saturday.

Planning events, historical context, or personal curiosity about specific dates.