Age Calculator
Computes exact age in years, months, and days from a birth date to any target date
Your date of birth
The date to calculate age as of (defaults to today)
Your exact age broken down into years, months, and days
Total number of days from birth to the target date
Number of days until your next birthday
Frequently Asked Questions
How is exact age calculated?
Exact age counts complete years, then remaining complete months, then remaining days. For example, someone born March 15, 1990 is 35 years, 11 months, and 9 days old on March 24, 2026. Leap years are accounted for in the day count.
How many days has the average person lived?
A 30-year-old has lived approximately 10,957 days. A 50-year-old about 18,262 days. The average US life expectancy of 77 years equals roughly 28,124 days. These numbers include leap days that occur every four years.
Do leap years affect age calculations?
Leap years add one extra day (February 29) every four years. People born on Feb 29 technically have a birthday every four years, though most celebrate on Feb 28 or March 1. Age calculators account for leap years when computing total days lived.
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