Birthday Countdown Calculator

Days until your next birthday.

Birth month

Birth day

Now month

Now day

Now year

Days until next birthday (days) 113

Formula: days until birthday this year or next

Step-by-step with your numbers:

1. Values used:

2. Birth month = 10

3. Birth day = 15

4. Now month = 6

5. Now day = 24

6. Now year = 2,026

8. Days until next birthday = 113days

Did we solve your problem today?

Count down to your next birthday.

The math behind it

If the birthday has passed this year, count to next year's.

Oct 15 from Jun 24 → 113 days.

Already passed?

Automatically shifts to next year.