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Age Calculator & Reference Chart

The fastest online age calculator by date of birth. Instantly find your chronological age and total elapsed days. Includes a 100-year age reference chart.

Year
Month
Day
Year
Month
Day
Age
-years old
Elapsed Days
-days

Age Reference Chart

Birth YearAge
20260years old
20251years old
20242years old
20233years old
20224years old
20215years old
20206years old
20197years old
20188years old
20179years old
201610years old
201511years old
201412years old
201313years old
201214years old
201115years old
201016years old
200917years old
200818years old
200719years old
200620years old
200521years old
200422years old
200323years old
200224years old
200125years old
200026years old
199927years old
199828years old
199729years old
199630years old
199531years old
199432years old
199333years old
199234years old
199135years old
199036years old
198937years old
198838years old
198739years old
198640years old
198541years old
198442years old
198343years old
198244years old
198145years old
198046years old
197947years old
197848years old
197749years old
197650years old
197551years old
197452years old
197353years old
197254years old
197155years old
197056years old
196957years old
196858years old
196759years old
196660years old
196561years old
196462years old
196363years old
196264years old
196165years old
196066years old
195967years old
195868years old
195769years old
195670years old
195571years old
195472years old
195373years old
195274years old
195175years old
195076years old
194977years old
194878years old
194779years old
194680years old
194581years old
194482years old
194383years old
194284years old
194185years old
194086years old
193987years old
193888years old
193789years old
193690years old
193591years old
193492years old
193393years old
193294years old
193195years old
193096years old
192997years old
192898years old
192799years old
1926100years old

Frequently Asked Questions about Age Calculation

Q. What is the difference between chronological age and traditional age systems?

While the international standard starts at 0, some traditional systems (like the historic East Asian system) consider a person to be 1 year old at birth and increase age on New Year's Day. This tool primarily follows the international standard to ensure accuracy for official use.

Q. How do I use this chronological age calculator?

To calculate your chronological age, simply enter your date of birth and the reference date (defaults to today). Our age calc will instantly show your years of age and total days lived.

Q. How do I calculate age based on two specific dates?

To find the age on a specific reference date, you subtract the birth date from the reference date. If the person has not yet reached their birthday in the reference year, they are one year younger than the simple difference in years.

Q. How can I calculate age in Microsoft Excel?

To calculate age in Excel using a date of birth, the DATEDIF function is best. Use the formula `=DATEDIF(A1, TODAY(), "Y")` where A1 is the cell containing your birth date.