Home › Calculators › Age Calculator
Age Calculator
Enter a date of birth to get an exact age in years, months and days, on today's date or any other.
How we calculate age
We count completed years first, then completed months after your last birthday, then the remaining days. That is how age is normally stated, and it handles months of different lengths correctly. Totals in days and weeks count every calendar day between the two dates.
Example
Born on March 15, 1990, on October 25, 2026 you are 36 years, 7 months and 10 days old. That is 13,373 days, or 1,910 weeks and 3 days.
Birthdays that matter for your money
| Age | What changes |
|---|---|
| 50 | Catch-up contributions: $8,000 extra in a 401(k) and $1,100 extra in an IRA for 2026. |
| 59½ | Withdraw from IRAs and 401(k)s without the 10% early withdrawal penalty. |
| 60–63 | Larger 401(k) catch-up of $11,250. |
| 62 | Earliest age to claim Social Security, at a permanently reduced amount. |
| 65 | Medicare eligibility. |
| 67 | Full Social Security retirement age for people born in 1960 or later. |
| 70 | Social Security stops growing; no reason to delay further. |
Planning ahead? The retirement calculator shows what your savings could pay from your chosen retirement age.
Frequently asked questions
How is age calculated?
Count the full years since your birth date, then the full months since your last birthday, then the remaining days. Someone born March 15, 1990 is 36 years, 7 months and 10 days old on October 25, 2026.
How are leap-day birthdays handled?
People born on February 29 usually celebrate on February 28 or March 1 in other years. Legally, most US states treat March 1 as the birthday in non-leap years; this calculator counts the birthday on March 1.
What ages matter for money?
50 (retirement catch-up contributions), 59½ (penalty-free IRA and 401(k) withdrawals), 62 (earliest Social Security), 65 (Medicare), 67 (full Social Security for anyone born in 1960 or later), 73 (required minimum distributions for many people).