Discover your exact age
Years, months, days, and every second in between — calculated instantly, with a countdown to your next birthday.
Enter your date of birth
We'll do the rest, down to the second.
How to use the Age Calculator
- 1
Click “Select your birth date” and choose your date of birth. Use the month and year dropdowns to jump back quickly.
- 2
Press “Calculate Age”.
- 3
Read your age in completed years, months and days, followed by the total weeks, days, hours, minutes and seconds you have lived — these keep ticking live.
- 4
Check your zodiac sign, the weekday you were born on, and how many days remain until your next birthday.
How your age is calculated
Age is counted the way people actually count birthdays: first the number of full years since your date of birth, then the full months since your last birthday, then the remaining days. Because it works from real calendar dates, months of different lengths and leap years are handled correctly.
The running totals (days, hours, minutes and seconds lived) are measured from midnight on your date of birth to this moment in your local time zone, so they update every second while the page is open. Everything is calculated inside your browser — your birth date is never sent to a server or stored.
Frequently asked questions
How do I calculate my exact age?
Enter your date of birth and press Calculate Age. The calculator counts completed years, then completed months since your last birthday, then the remaining days, and also shows your age in total weeks, days, hours, minutes and seconds.
Does the age calculator account for leap years?
Yes. It uses real calendar dates rather than an average year length, so leap days and months with 28, 29, 30 or 31 days are all counted correctly.
I was born on February 29. When is my birthday in other years?
In years without a February 29, the countdown treats March 1 as your next birthday.
Is my date of birth saved anywhere?
No. The calculation runs entirely in your browser. Your date of birth is not uploaded, logged or stored.
More free online tools
Calculators, converters and generators that run in your browser — no sign-up required.
- BMI CalculatorBody Mass Index and healthy weight range, metric or imperial.
- Password GeneratorStrong, random passwords generated locally in your browser.
- Unit ConverterLength, weight, volume, temperature and speed conversions.
- Percentage CalculatorPercent of a number, percent of a total and percent change.
- Loan CalculatorMonthly payment, total interest and yearly amortization.
- QR Code GeneratorTurn any link or text into a downloadable QR code.
- Color Palette PickerShades, complementary, analogous and triadic palettes.
- Pomodoro Timer25-minute focus sessions with short and long breaks.