How age is calculated
This calculator takes your date of birth and subtracts it from today's date using calendar arithmetic. It counts full years, then remaining full months, then remaining days to give your precise age.
Example
If you were born on June 15, 1995 and today is June 14, 2026, you are 30 years, 11 months and 30 days old — just one day shy of your 31st birthday.
What it tells you
- Exact age in years, months, and days
- Total days lived — how many calendar days since birth
- Next birthday countdown — days until your next birthday
- Zodiac sign — your Western astrological sign
- Day of week — what day of the week you were born on
Fun facts
The average person lives about 27,375 days (roughly 75 years). If you're 30, you've already used about 40% of that time. Every day is worth counting.
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Check your BMI and TDEE for health insights. See how your savings grow over time with the compound interest calculator — the earlier you start, the more time compound growth has to work.
Frequently asked questions
- How do I calculate my exact age?
- Enter your date of birth above. The calculator subtracts it from today's date to give years, months and days.
- How accurate is this?
- It calculates to the exact day using calendar arithmetic.
- What is my zodiac sign?
- Determined by your birth date — the calculator shows it automatically.
- Is this calculator free?
- Yes, free, no sign-up, runs entirely in your browser.