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Future Age Calculator

Calculate your future age and see the date on which you will be that age. Simply enter your date of birth, the future age you want to calculate, including the age in years, and, optionally, in months, and the calculator will show the approximate date you will reach that age, as well as how long that date is from today. Future age calculating is helpful for retirement planning: see when you will be your full retirement age.

Past Age Calcuator too! Easily check the date you were a past age by entering age (in years and months) less than present age.


Future Age in Years (eg. 66 Years Old)

Optional - For calculating Years Plus Months (Optional)

Optional - To personalize, or aging someone else

Note: Age calculators on our site use cookies to save some info you enter (such as date of birth) to facilitate re-running with different criteria. These cookies are temporary and deleted when your browser closes.

Criteria Fields

Calculate Years Old - Use this field to specify the future age, in years. Example2: 59, 62, 70 for 59 years old, 62 years old, and 70 years old, respectively.

Plus Months - This is an optional field which you can use to also calculate the number of additional months when aging. For example, to calculate 66 years plus 4 months, enter 4 into this field (and 66 into the Years Old field).

Note: A half year is 6 months. So, for 59.5, you would enter 6 Months (and 59 for year). A quarter year is 3 months.

About Calculator

Depending on the criteria you enter (ie. birth date and target age), the calculator may generate a date which varies by a day or more after the date you might expect. The following examples help explain results you might see, as well as how the date math arrived at these results. Typically when calculating on years only (by leaving the months field empty) you will get the date you expect, except in the case of leap years as outlined in example 2 below.

Example 1: Person born March 31, 1998. Calculate when this person will be 30 years old. Result is March 31, 2028, as expected. However, if checking when the person will be 30 years and 6 months, Sunday October 1, 2028 is calculated. That's because 6 months ahead would be September 31, but since September only has 30 days, the date rolls forward by a day.

Example 2: Leap years have an extra day (366 days), namely February 29th, whereas non-leap years are only 365 days. If a person is born in a leap year and on February 29th, birth dates are an issue in non-leap years. Some celebrate on February 28th, others on March 1st. This calculator uses March 1 to mark a year boundary for non-leap years. So, for example, if a person is born February 29, 1980, this calculator would indicate the person is 62 on March 1, 2042, since 2042 is not a leap year. However, it would indicate the person is 60 on February 29 2040, since 2040 is a leap year.

Example 3: Person born August 31, 2001. When is this person 66? On August 31, 2067. But if checking when this person is 66 years old and 6 months (ie. 66.5), Friday March 2, 2068 is generated because it's a leap year (February has 29 days) plus 2 more days since August has 31 days. If checking when this person is 67.5, we get March 3, 2069 because it's not a leap year (February has 28 days) plus 3 more days since August has 31 days.

Disclaimer: This calculator is provided for informational and entertainment purposes only. You should not rely on any information provided on or generated by this calculator to make any decisions whatsoever, including any financial decisions. The dates generated may only be close approximations and may not have the exact precision you require for your particular situation and therefore can not and should not be relied upon. If necessary, consult with a finanacial or tax advisor whenever making financial related decisions regarding age.