How do I calculate my exact age?

To calculate your exact age, subtract your date of birth from today's date. The result gives you years, months, and days. For precision down to hours, minutes, and seconds, also factor in the current time of day.

How is age calculated in India?

In India, age is typically calculated using the completed-years method (Western system). For example, a person born on 15 August 2000 turns 25 on 15 August 2025. Some traditional systems count from conception or consider the birth year as year one.

Does a leap year birthday affect my age?

No. If you were born on 29 February, your age still increments annually. In non-leap years, your birthday is legally recognised as either 28 February or 1 March, depending on jurisdiction. The age calculation itself is unaffected.

What is the difference between chronological age and biological age?

Chronological age is the time elapsed since birth, measured in years, months, and days. Biological age reflects how well your body functions relative to your chronological age, influenced by genetics, lifestyle, diet, and exercise. This calculator measures chronological age.

Age Calculator India – Your Exact Age in Years, Months, Days & Seconds

Enter Your Details

Date of Birth

Reference Date (optional, defaults to today)

Results

Enter your date of birth to see results

How Age Is Calculated

Age calculation seems straightforward — subtract your birth date from today — but the details matter. Different countries, legal systems, and cultural traditions handle it differently, especially when months have varying lengths or when a birthday falls on 29 February.

The Completed-Years Method (Used in India)

India follows the completed-years (Western) system for all official purposes — passports, Aadhaar, voter ID, school admissions, and legal age verification. Under this system, you "turn" a new age only on your birthday. A child born on 1 June 2020 is 4 years old until 31 May 2025, and turns 5 on 1 June 2025.

How This Calculator Works

Age = Reference Date − Date of Birth

Broken down into completed years, remaining months, and remaining days

The calculator handles month-length differences correctly. If your birthday is the 31st and the current month has only 30 days, it borrows from the previous month. For leap year birthdays (29 Feb), the calculator counts your age normally and notes the next valid birthday.

What the Results Include

Live age — years, months, days, hours, minutes, and seconds, updating in real time when using today's date
Next birthday countdown — months, days, and a live clock counting down
Zodiac sign — based on Western tropical astrology date ranges
Age breakdown — total months, weeks, days, hours, minutes, and seconds since birth
Life statistics — estimated heartbeats, breaths, steps, sleep hours, and more based on published averages

Age Requirements in India

Voting age: 18 years (as per the Constitution, 61st Amendment)
Legal drinking age: 18–25 depending on state (21 in most states)
Marriage: 21 for men, 18 for women (as of 2025)
Driving licence (car): 18 years
Senior citizen status: 60 years (for tax benefits under Section 80TTB)

Frequently Asked Questions

Subtract your date of birth from today's date. The result gives years, months, and days. For precision down to seconds, factor in the current time of day. This calculator does all of that automatically.

Indian government documents (passport, Aadhaar, voter ID) use the completed-years method based on the Gregorian calendar. Your age is the number of full years elapsed since your date of birth as recorded on your birth certificate.

No. If you were born on 29 February, your age still increments every year. In non-leap years, your birthday is legally treated as either 28 February or 1 March depending on jurisdiction. The age calculation itself remains the same.

Chronological age is time since birth — what this calculator measures. Biological age reflects how your body actually functions, influenced by genetics, diet, exercise, and lifestyle. Two people with the same chronological age can have very different biological ages.

Yes. Use the "Reference Date" field to set any date instead of today. The calculator will show the age difference between your date of birth and the reference date you choose.

Disclaimer

This calculator is for informational and entertainment purposes. Life statistics are estimates based on published population averages. For official age verification, refer to your birth certificate and consult relevant authorities.