Age Calculator
Calculate your exact age in years, months, weeks, and days. Includes zodiac sign, birth weekday, and next birthday countdown.
Calculate your exact age in years, months, weeks, and days from any date of birth — instantly in your browser, no sign-up required.
How to use
- Select your Date of birth using the date picker.
- Optionally change the Age on date field to calculate age on a specific date (defaults to today).
- Results appear automatically as soon as both dates are set.
What you get
| Result | Description |
|---|---|
| Years | Your age in complete years |
| Months | Total months elapsed since birth |
| Weeks | Total weeks elapsed since birth |
| Days | Total days elapsed since birth |
| Exact age | Precise breakdown: X years, Y months, Z days |
| Born on | Full weekday and date of birth |
| Zodiac sign | Western astrological sign |
| Next birthday | Days remaining and the turning age |
Use cases
- Verifying your exact age for official documents or forms
- Finding out your zodiac sign based on your birthday
- Counting down the days until your next birthday
- Calculating how old someone was on a specific past or future date
- Satisfying curiosity — how many days old are you today?
FAQ
How is the age calculated?
Age is computed as the exact calendar difference between the date of birth and the target date. Years, months, and remaining days are calculated using proper calendar arithmetic — not just dividing total days by 365, so leap years and varying month lengths are handled correctly.
Can I calculate age on a past or future date?
Yes. Change the "Age on date" field to any date — past or future — to find out how old a person was or will be on that specific day.
Does it handle leap years?
Yes. The tool uses JavaScript's native Date object, which correctly handles leap years and the different number of days in each month.
What is the zodiac sign based on?
The zodiac sign shown is based on Western astrology (sun signs), determined by the birth month and day using standard date ranges.
Is my data stored or sent anywhere?
No. All calculations run entirely in your browser. Nothing is sent to any server.