Age Calculator
Age from a birth date.
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About Age Calculator
The Age Calculator tells you exactly how old you are. Enter your date of birth and instantly see your age in years, months, and days, along with the total number of days you have been alive and a countdown to your next birthday.
It is completely free with no sign-up required. Everything runs entirely in your browser, so your birth date is never uploaded, stored, or shared with anyone.
Frequently asked questions
- Is the Age Calculator free to use?
- Yes, it is 100% free with no account, sign-up, or download required. Use it as many times as you like.
- Is my birth date uploaded or stored anywhere?
- No. All calculations happen locally in your browser, so your date of birth never leaves your device and is never sent to a server.
- How is my age calculated?
- It compares your birth date to today's date and breaks the difference down into full years, months, and days, accounting for varying month lengths and leap years.
- What does 'total days lived' mean?
- It is the exact number of calendar days between your birth date and today, giving you your age expressed purely in days.
- How is the days until next birthday counted?
- It finds your next upcoming birthday from today's date and counts the whole days remaining until then. If today is your birthday, it shows zero.
- Can I enter a future date?
- No. Birth dates in the future are rejected with an error message, since you cannot have an age before you were born.