Age Calculator

Q: Does the age calculator account for leap years?

Yes. The calculator uses JavaScript's built-in Date object, which accounts for leap years correctly. The total days count will reflect the actual number of days elapsed including any 29 Feb dates in between.

Q: Can I calculate someone's age at a specific past or future date?

Yes. Simply change the 'As of date' field from today to any date in the past or future. The calculator will compute the age as of that date.

Q: What is the legal age of majority in India?

The legal age of majority in India is 18 years under the Majority Act, 1875. For certain purposes like marriage, the minimum age is 18 for women and 21 for men. For voting, the minimum age is 18.

Q: How many days old am I?

The calculator shows your total age in days under the detailed breakdown. Divide by 365.25 to get a rough age in years. For a 30-year-old, this is typically around 10,957 days.

Q: How do I calculate my age for a government form or passport?

Government forms typically require age as of a specific date - often the application date or a cut-off date. Use the 'As of date' field in this calculator, set it to the required reference date, and enter your date of birth. The calculator returns your exact age in completed years as of that date, which is what most official forms require.

Q: Can two people born in the same year have different ages at the same time?

Yes. If one person was born in January and another in December of the same year, for most of the year the January-born person will be one year older. They will have the same chronological age only in the brief window between the December birthday and December 31. This is why government schemes, school enrollment rules, and competitions often specify a cut-off date rather than just a birth year.

Q: How old is someone born in 1990?

As of 2026, someone born in 1990 is 35 years old (if their birthday has passed this year) or 36 years old (if their birthday falls later in 2026, and you're calculating before it). For a precise answer including months and days, enter the exact birth date into this calculator with today's date as the 'As of' date.

Find your exact age to the day, and see how long until your next birthday.

🎂 What is an Age Calculator?

An age calculator determines the exact amount of time that has passed between a person's date of birth and a target date. While saying "I am 30 years old" is simple enough, the precise calculation of age in years, months, and days is surprisingly complex when you account for varying month lengths (28, 29, 30, or 31 days), leap years, and different calendar conventions.

Age calculation matters in many real-world situations. Insurance premiums, pension eligibility, school admissions, legal rights, and medical dosing all depend on knowing exact age. A person who is "30 years old" could be anywhere from exactly 30 to 30 years, 364 days old - a full year's range. Knowing the precise age to the day eliminates this ambiguity.

This calculator computes your complete age: the number of full years, the remaining months, and the remaining days after those months. It also provides alternative representations such as total months elapsed, total weeks, and total days - useful for filling in official forms, calculating duration for contracts, or satisfying simple curiosity.

The "As of date" field defaults to today, but you can set it to any date. This is useful if you need to know what age you were or will be on a specific date - a job interview date, an anniversary, an eligibility cutoff date for a government scheme, or a court date. Simply enter your date of birth and the target date, and the calculator handles all the rest.

📐 How Age is Calculated

Age = Target Date − Date of Birth

Years = Number of complete 12-month cycles elapsed

Months = Remaining complete months after full years

Days = Remaining days after full months

The calculation proceeds by first counting complete years (how many birthdays have passed), then counting complete months from the last birthday, then counting the remaining days. This is the standard civil age calculation used by most legal and administrative systems worldwide.

Leap years are handled automatically. If your birthday is 29 February, the calculator uses 28 February as your effective birthday in non-leap years for counting complete years, following the most common legal interpretation.

📖 How to Use This Calculator

Steps to Find Your Age

Enter your Date of Birth using the date picker. You can type the date directly or use the calendar icon.

The "As of date" defaults to today. Change it if you want to calculate age at a specific past or future date.

Click Calculate Age to see your exact age in years, months, and days, plus the total in months, weeks, and days.

Check the Next Birthday section to see exactly how many days remain until your next birthday.

💡 Example Calculations

Example 1 — Person Born 15 August 1994

Age as of 2 March 2026

Full years from 15 Aug 1994 to 15 Aug 2025 = 31 years

From 15 Aug 2025 to 2 Mar 2026: Aug 15→Sep 15 (1 month), Sep→Oct (2), Oct→Nov (3), Nov→Dec (4), Dec→Jan (5), Jan→Feb (6) = 6 months

From 15 Feb 2026 to 2 Mar 2026 = 15 days

Age = 31 years, 6 months, 15 days

Try this example →

Example 2 — Checking Eligibility

A person born on 5 July 2008 - are they 18 as of 1 January 2027?

From 5 Jul 2008 to 5 Jul 2026 = exactly 18 years

From 5 Jul 2026 to 1 Jan 2027 = 5 months 27 days additional

Age on 1 Jan 2027 = 18 years, 5 months, 27 days - Yes, they are 18

Try this example →

❓ Frequently Asked Questions

How do I calculate my exact age?+

Your exact age is the number of complete years, months, and days elapsed since your date of birth. Start by counting complete years (how many times your birthday has passed), then count remaining complete months from the last birthday, then count the remaining days. This calculator handles this automatically, including leap years and varying month lengths.

Does the age calculator account for leap years?+

Yes, the calculator uses JavaScript's native Date object which correctly accounts for all leap years. The total days figure in the detailed breakdown reflects the actual number of calendar days elapsed, including any 29 February occurrences. If your birthday is on 29 February, the calculator uses 28 February as your birthday in non-leap years.

Can I calculate someone's age at a specific past or future date?+

Yes. Change the "As of date" from today to any date you choose - past or future. This is useful for checking eligibility cutoffs (scholarship, pension, government scheme deadlines), calculating age for insurance purposes, or filling in age at a specific historical or future event date.

What is the legal age of majority in India?+

Under India's Majority Act, 1875, a person attains the age of majority at 18 years. This means they can vote, enter contracts, and are treated as adults under most laws. However, some specific laws set different thresholds: the minimum marriage age is 18 for women and 21 for men, and for criminal responsibility under the Juvenile Justice Act, the threshold is also 18.

How many days old am I?+

The detailed breakdown section of this calculator shows your total age in days. A rough estimate: multiply your age in years by 365 and add the extra days. For precision, this calculator computes the exact count including leap years. A person who is exactly 30 years old as of a date is approximately 10,957 days old (depending on when they were born, due to leap years).

How do I calculate my age for a government form or passport?+

Government forms typically require age as of a specific reference date - often the application date or an official cut-off. Use the 'As of date' field in this calculator, set it to the required reference date, and enter your date of birth. The calculator returns your exact completed years as of that date, which is what most official forms require. This is useful for passport applications, scholarship eligibility, pension schemes, and competitive exam age limits.

What is the difference between chronological age and biological age?+

Chronological age is the number of years since birth - what this calculator computes. Biological age reflects how old your body actually functions, based on health markers like blood pressure, telomere length, muscle mass, and metabolic rate. Biological age can be higher or lower than chronological age depending on lifestyle and genetics. This calculator measures only chronological age; biological age assessment requires medical testing.

Can two people born in the same year have different ages at the same time?+

Yes. A person born in January and another born in December of the same year will, for most of the year, differ by one completed year in age - the January-born person will be one year older. They have the same chronological age only briefly between the December birthday and December 31. This is why scholarship schemes, school enrollment rules, and competitive exams specify a cut-off date rather than just a birth year.

How old is someone born in 1990?+

As of 2026, someone born in 1990 is 35 years old if their birthday has already passed this year, or turning 36 if their birthday is later in 2026. For a precise answer including months and days, enter the exact birth date in this calculator with today as the 'As of' date. Use the date fields rather than mental arithmetic to avoid errors with leap years and partial month counts.

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