Birthday Calculator
Everything about a birthday, from one date
The weekday you were born on, the weekday your next birthday falls on, your star sign, your zodiac animal, and how long there is to wait.
Questions people ask
The things that come up about birthday calculators, answered plainly.
What day of the week was I born on?
The page states it, along with the traditional rhyme for that day — Monday's child is fair of face, and so on, which is the reason most people go looking.
How often does a birthday fall on the same weekday?
It shifts by one day each year and two across a leap year, so the pattern repeats every 28 years — with exceptions around century years that are not leap years, like 1900 and 2100.
Related tools
Exact ages, next birthdays, anniversaries and the odder age scales.
Birth Day FinderThe weekday for any date, the rhyme that goes with it, and how the same date shifts across the years around it.
Next Birthday CalculatorThe date, the weekday, the days to wait and the age you will turn — plus the next five birthdays and which of them land on a weekend.
Age CalculatorYour age in years, months and days, worked out the way a birthday works — plus the totals in weeks, hours and seconds, and how long until the next one.
Zodiac Sign CalculatorYour sign from your birth date, its element, quality and ruling planet — and a warning when your birthday sits on a cusp, where the answer genuinely depends on the year.