Age Calculator
Find out exactly how old you are — in years, months, days, and weeks. Enter your birthday below.
How Old Am I?
Our age calculator gives you your exact age from your date of birth to today. It accounts for every leap year, every month's varying length, and gives you breakdowns across multiple units — years, months, weeks, and total days.
Quick Reference: Age by Birth Year
| Birth Year | Age in 2026 | Total Days |
|---|---|---|
| Born in 1980 | 45 years old | ~16,436 days |
| Born in 1985 | 40 years old | ~14,610 days |
| Born in 1990 | 35 years old | ~12,784 days |
| Born in 1995 | 30 years old | ~10,958 days |
| Born in 2000 | 25 years old | ~9,132 days |
| Born in 2005 | 20 years old | ~7,305 days |
| Born in 2010 | 15 years old | ~5,479 days |
→ Browse all birth years from 1960–2015
Frequently Asked Questions
How is age calculated?
Age is calculated by subtracting your date of birth from today's date. The result counts full years, with remaining months and days shown separately.
What if I was born on February 29?
Our calculator handles leap year birthdays. In non-leap years, February 28 is treated as your birthday for calculation purposes.
How many days old is a 30-year-old?
A 30-year-old has lived approximately 10,957 days, depending on the number of leap years in their lifetime.
How do I calculate my age from my date of birth as of today?
Enter your date of birth using the day, month, and year dropdowns above and click Calculate Age — the result is always based on today's date automatically. Need an age as of a different date? Try the Age Difference Calculator or the Chronological Age Calculator.