How to use the age calculator
- Pick your date of birth.
- Leave the second date as today, or set any date to find your age then.
- Your exact age and totals update instantly.
What the age calculator shows
Beyond your age in years, the tool breaks it down into months and days, and converts your age into total months, weeks and days — so you can see exactly how many days you’ve been alive. It also counts down to your next birthday. People use it to work out an exact age for forms and eligibility, to find someone’s age on a specific past or future date, or just out of curiosity.
Why the day-by-day method matters
A simple “current year minus birth year” can be off by up to a year, because it ignores whether your birthday has happened yet this year. This calculator instead counts complete years, then the leftover months, then the leftover days — the precise way ages are stated on official documents.
Frequently asked questions
How is age calculated? It counts full years, then the remaining full months, then the leftover days — the same way you’d say “25 years, 3 months and 12 days.”
Can I find my age on a future date? Yes — set the second date to any future date to see how old you’ll be then.
Does it handle leap years? Yes — the day counts account for leap years automatically.
Is my data stored? No — everything is calculated in your browser and nothing is saved.