Enter your date of birth to instantly find out what day of the week you were born on, and see when your birthday next lands on that same weekday again.
Works for any Gregorian calendar date, including leap-day birthdays.
See exactly when your birthday next lands on the same weekday again.
Your birthdate never leaves your device. No account or uploads required.
This free online tool looks up the exact day of the week your date of birth fell on. It also compares that weekday to the weekday your birthday falls on this year, and tells you when the two will next line up again.
Every calendar date has exactly one day of the week attached to it, determined entirely by the Gregorian calendar’s fixed rules. This tool reads your birthdate and uses your browser’s date engine, the same system every digital calendar relies on, to return the correct weekday with no guesswork or approximation.
Enter any date of birth, from decades ago to the present day, and get an accurate weekday instantly. The tool understands leap years automatically.
Because a regular year is 52 weeks plus one day, your birthday usually lands on a different weekday each year. We show you what it is this year.
We search forward to find the next year your birthday falls on the exact same weekday it did when you were born — a fun little calendar coincidence.
Born on February 29? In years without a February 29, the tool uses February 28 to work out that year’s weekday, matching common birthday conventions.
Quick answers about finding your birth weekday and how the calculation works.
Enter your date of birth above and select “Find my birth weekday.” The tool instantly works out the weekday from the calendar date, no sign-up required.
It is fully accurate for any Gregorian calendar date, including leap years. The tool uses your browser’s built-in date engine, the same system used by calendars worldwide.
Leap-day birthdays are handled automatically. In years without a February 29, the tool uses February 28 to work out that year’s weekday, matching common birthday conventions.
A regular year has 365 days, which is 52 weeks plus one extra day, so a fixed calendar date usually shifts forward by one weekday each year, or two after a leap year.
No. Everything is calculated locally in your browser, and the date you enter is never uploaded or saved by this tool.