All Age Calculators and Tools

Every age calculator on this site is listed here by topic, so you can jump straight to the question you have. Some age calculators answer a quick question like how old you are today, while others handle school cutoffs, retirement ages or a pet’s life stage. Each tool page also explains the method behind the numbers.

CoreAge CalculatorExact age in years, months and days CoreAge Between Two DatesTime between any two dates CoreChronological Age CalculatorPrecise age for tests and forms CoreAge Difference CalculatorHow far apart two people are CoreHalf Your Age Plus SevenThe dating rule, worked out CoreAge in DaysDays, hours and seconds alive BirthdayBirthday CalculatorWeekday, zodiac and birthstone BirthdayHalf Birthday CalculatorSix months after your birthday BirthdayBirthday CountdownLive timer and sleeps left BirthdayHow Old Will I BeYour age in any future year BirthdayBirth Year CalculatorBirth year from an age BirthdayYears Ago CalculatorHow long ago a year was BirthdayMonths to YearsMonths converted to years BirthdayDays to YearsDays converted to years GenerationsWhat Generation Am IGeneration by birth year GenerationsBorn In Year IndexA page for every year 1925 to 2025 GenerationsGen Z Years1997 to 2012 GenerationsMillennial Age Range1981 to 1996 GenerationsGen X Years1965 to 1980 GenerationsBaby Boomer Years1946 to 1964 Family and lifeCorrected Age CalculatorAge for premature babies Family and lifeAge by GradeUS school grade by birth date Family and lifeSenior Citizen AgeMedicare, discounts and more Family and lifeLegal Age CalculatorDate of birth to be 21 today Family and lifeAge Calculator for ExamsUPSC, NDA and cutoff dates Family and lifeBiological Age CalculatorHow old your body seems Cultural and specialtyKorean Age CalculatorInternational, Korean and year age Cultural and specialtyChinese Age CalculatorLunar age and zodiac Cultural and specialtyHijri Age CalculatorAge in the Islamic calendar Cultural and specialtyCalculadora de EdadCalculadora en español Cultural and specialtyAge Grade CalculatorRunning times by age Cultural and specialtyCalculate Age in ExcelDATEDIF and YEARFRAC formulas PetsDog Age CalculatorDog years by size PetsCat Age CalculatorCat years and life stages PetsPet Age CalculatorRabbits, hamsters, horses and more PetsDog Years by AgeEvery year of a dog’s life

All of our age calculators use the same date engine, which counts real calendar days and handles leap years correctly. Results are shown in years, months and days unless a tool needs a different unit. Nothing you enter is stored or sent anywhere, because the math runs in your browser.

Core Age Calculators

The main age calculator on the homepage gives your exact age from a date of birth, along with totals in months, weeks, days and hours. The age between two dates tool measures the gap between any two days in history, not only a birth date. The chronological age calculator is built for testing and school forms that need a precise age in years and months.

Desk calendar, alarm clock, tape measure, birthday candle and notebook — Every age tool on the site, in one place.

The age difference calculator compares two people and shows exactly how far apart they are. The half your age plus seven page explains that dating rule and calculates the range for any age. For a big picture view, the age in days calculator shows how many days you have lived so far.

Birthday and Countdown Tools

The birthday calculator tells you the weekday you were born and the weekday of your next birthday. The half birthday calculator finds the date exactly six months from your birthday, and the birthday countdown shows the days left until the next one. These age calculators are popular for party planning and milestone celebrations.

The how old will I be calculator projects your age on any future date or in any future year. The birth year calculator works backward from an age to the year someone was born. The years ago calculator turns any number of years into a past date and the matching age.

Generations and Birth Years

The what generation am I tool places any birth year into the Silent Generation, Baby Boomers, Gen X, Millennials, Gen Z, Gen Alpha or Gen Beta. Each generation also has its own guide with the year range, current ages and defining events. These pages explain why different sources draw the boundaries in slightly different years.

The age by birth year hub links a page for every year from 1925 to 2025. Each year page shows how old that person is now, their generation, Chinese zodiac sign and key milestone dates. It is the quickest way to answer how old someone born in a given year would be.

Family, School and Life Stage Tools

The corrected age calculator helps parents of premature babies track development using the due date. The age by grade tool matches a school grade to the usual age range in the United States. The senior citizen age page explains the ages that unlock discounts, Medicare and Social Security benefits.

The legal age page covers the ages for driving, voting, drinking and other milestones across states and countries. The age calculator for exams checks eligibility on the cutoff date for exams such as UPSC and NDA. The biological age calculator estimates how your body is aging compared with the calendar.

Cultural, Pet and Specialty Tools

The Korean age calculator, Chinese age calculator and Hijri age calculator handle traditional ways of counting age. A Spanish version of the main tool, the calculadora de edad, serves Spanish speaking visitors. The age grade calculator scores running times against age standards for masters athletes.

Pet owners can use the dog age calculator, cat age calculator and pet age calculator for rabbits, hamsters, guinea pigs and horses. The dog years by age pages explain each year of a dog's life in human terms. For spreadsheet users, the calculate age in Excel guide shows the exact formulas.

Frequently Asked Questions

Are these age calculators free to use?

Yes, all age calculators on this site are free and need no account. You can use them as often as you like. There are no limits on the number of calculations.

Do you store the birth dates I enter?

No, the calculations run in your browser. Dates are not saved or sent to our servers. Closing the page clears them.

Which calculator should I use for my exact age?

Use the main age calculator on the homepage. It shows years, months and days. It also lists your age in other units.

Do the tools handle leap years?

Yes, every tool uses the real calendar. Leap days are counted correctly. People born on February 29 get accurate results too.

Can I suggest a new age tool?

Yes, we welcome ideas from visitors. Use the contact page to send a suggestion. We review every request we receive.