Birthday Calculator
Learn fun facts about your birthday: the weekday you were born on, how many days you have lived, and key milestones like when you will hit 10,000 days old.
Birthday Calculator insights
Find the weekday you were born, days since birth, and fun milestones like 10,000 days old.
- Great for “what day was I born” and milestone age searches.
- Shows total days lived for quick trivia or record-keeping.
- Pair with Next Birthday to plan your upcoming celebration.
Can I see my 10,000th day?
Yes—the calculator highlights major day milestones so you can celebrate them.
Does it adjust for leap years?
Yes—dates are fully calendar-aware, including leap years.