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Birthday Calculator

Find the day of the week you were born, how many days until your next birthday and your exact age in years, months, weeks and days. Free.

Everything about your birthday

Enter your date of birth to see the weekday you were born on, your exact age down to the day, and a countdown to your next birthday. The calculator counts calendar months the way people do, so someone born on 31 January turns a month older on the last day of February. If you were born on 29 February, your birthday is counted as 28 February in common years. You can also pick another date to see how old you were, or will be, on that day.

How to use it

  1. 1

    Enter your date of birth

    Day, month and year.

  2. 2

    Pick a date (optional)

    Leave it as today, or choose another day.

  3. 3

    See the details

    Age, the weekday you were born and days to your next birthday.

Frequently asked questions

What day of the week was I born?

Enter your birth date and the calculator shows the weekday, for any year.

How many days until my birthday?

The calculator counts the days from today to your next birthday.

What about a 29 February birthday?

In years without a 29 February, the birthday is counted on 28 February.

Is my birth date stored?

No. It stays in your browser and isn't sent anywhere.

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