Age Calculator
Calculate your exact age in years, months, days, hours, minutes, and seconds. Free, instant, private.
You are
Calculation runs entirely in your browser — nothing is sent anywhere.
Age Calculator tells you exactly how old you are in years, months, and days from any birthdate. ConvertDa's free Age Calculator runs in your browser — pick a date, see your precise age, and learn how many days you've been alive.
How to age calculator
- 1
Pick your date of birth.
- 2
Optionally pick a reference date (defaults to today).
- 3
See your age in years, months, days — and your next birthday.
Frequently asked questions
Is my date of birth uploaded anywhere?▾
No. Everything happens in your browser; nothing is sent to any server.
Why does it show months as well as years?▾
Most people round to years, but knowing the exact months and days is useful for school admissions, visas, insurance, and birthdays.
Can I calculate someone else's age?▾
Yes — just enter their birth date instead of yours. The reference date can be any date, past or future.
Does it handle leap years correctly?▾
Yes. The calculator accounts for leap years, leap seconds, and DST transitions to give an accurate to-the-day result.
Can I calculate the age of an event, not a person?▾
Yes. Pick any past date — the calculator works for events, anniversaries, project start dates, anything time-based.