How to use the age milestone calculator
- Enter date of birth.
- Enter target age in whole years (e.g. 18, 60, 65).
- Read the milestone date and days until or since, counted from today.
- Copy link to share birth date and target age.
Example: when is my 60th birthday?
Born May 20, 1966, target age 60 → milestone date May 20, 2026. Open the page before that day to see days remaining; after May 20, days since (always relative to today). This is the calendar birthday when you complete 60 years—not the same as “how old am I today,” which uses the age calculator.
Milestone date vs. current age
Age calculator answers “how old on a given day” in years, months, and days. Milestone answers “on which day do I turn N” and countdown to that day. For retirement planning offsets, pair with add/subtract date or days until.
Frequently asked questions
What date do I turn 18?
Enter birth date and target age 18—the milestone date is when you turn 18.
When do I turn 60 or 65?
Same flow with target age 60 or 65 for retirement planning dates.
How many days until I turn 18?
After you get the milestone date, the results panel shows days left or elapsed from today.
How is this different from the age calculator?
Age calculator = how old on a day; this page = which day you turn N.
What about February 29 birthdays?
Non-leap years use the same rules as the age calculator for leap-day births.
Is this the legal date I become that age?
Many places use the birthday; confirm rules for your form or contract.
Can I countdown to my milestone date?
Use the days until calculator from today to the milestone date.
What age should I enter?
Whole years only—e.g. 18, 21, 60, 65.
Can I share my calculation?
Copy link saves birth date and target age.