How to Use the Age Calculator
- Enter your date of birth — select day, month, and year using the date picker.
- Choose the end date — defaults to today; change it to any custom date if needed.
- View your exact age — instantly see years, months, days, plus total hours, weeks, and seconds.
No sign-up required. All calculations run in your browser — nothing is sent to any server.
How Age is Calculated
The calculator subtracts your birth date from today (or a custom end date), handling varying month lengths and leap years. When the current day is smaller than the birth day, it borrows days from the previous month — the same logic used by government record systems and Excel's DATEDIF function.
days = D2 − D1 (borrow from prev month if negative)
months = M2 − M1 (adjust if negative)
years = Y2 − Y1 (adjust if months went negative)
Common Age Requirements in India
| Purpose | Age | Notes |
|---|---|---|
| Voting | 18 yrs | As on Jan 1 of qualifying year |
| Driving (car) | 18 yrs | 16 for gearless motorcycle |
| Marriage (male) | 21 yrs | As per Indian law |
| Marriage (female) | 18 yrs | Proposed uniform 21 under new bill |
| Senior Citizen | 60 yrs | Tax benefits, railway concession |
| Govt Job (General) | 18–27 yrs | Relaxation for reserved categories |
| Passport | No minimum | Minor passport with parental consent |
Frequently Asked Questions
How do I calculate my exact age?â–¼
Enter your date of birth above and click Calculate. The tool computes exact years, months, and days accounting for leap years and varying month lengths.
Does it account for leap years?â–¼
Yes. The calculator correctly handles February 29 birthdays and all leap year boundaries.
What age is needed for a government exam like UPSC?â–¼
UPSC calculates age as on August 1 of the exam year. Other exams (SSC, IBPS) use the last date of application as the reference.
Can I calculate age in total days or hours?â–¼
Yes. The tool shows total days, weeks, hours, minutes, and seconds since birth.
What is chronological vs biological age?â–¼
Chronological age is the time elapsed since birth — what this tool measures. Biological age reflects how well your body functions relative to your chronological age.