Birthday Calculator (Next Birthday and Countdown)
Enter your date of birth to count down to your next birthday.
Your numbers
Your results
Days until your next birthday
Days until your next birthday
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Next birthday
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Age on that birthday
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Day you were born
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Zodiac sign (Western)
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Days lived so far
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Birthday Calculator (Next Birthday and Countdown) by TheCalcTools
How the Birthday Calculator (Next Birthday and Countdown) works
The calculator finds this year’s birthday; if it has passed, it uses next year’s. For a 29 February birthday it uses 1 March in non-leap years.
The Western zodiac sign comes from the usual tropical date ranges, which can shift by a day from year to year.
The formula
Days until birthday = next birthday date − today
Worked example
Using the default values shown in the calculator:
| Date of birth | 1995-03-08 |
|---|---|
| Today | 2026-10-17 |
- Born on a Wednesday. Next birthday: Monday, 8 March 2027, in 142 days, turning 32.
- Zodiac sign: Pisces.
Result:
| Days until your next birthday | 142 |
|---|---|
| Next birthday | Monday, 8 March 2027 |
| Age on that birthday | 32 |
| Day you were born | Wednesday |
| Zodiac sign (Western) | Pisces |
| Days lived so far | 11,546 |
Frequently asked questions
How many days until my birthday?
Enter your date of birth: the first result is the countdown from today.
Sources and further reading
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This calculator gives estimates for information only. Check important results independently before you rely on them. See our disclaimer.