Age in Years Calculator
Calculate your age in years with months and days breakdown. Simple and accurate age calculation.
How to Calculate Age
Age in years: 35 years, 6 months, 15 days
Methodology
Calculating age isn't simply subtracting birth year from current year. The number of days in months varies (28, 30, or 31), and leap years occur every 4 years (adding a 29th day to February).
Leap Years
A year is a leap year if divisible by 4, except century years must be divisible by 400. This calculator automatically accounts for leap days.
Age Facts
- 1 year = 365.25 days (average)
- 1 year = 52.18 weeks
- 1 year = 12 months
- 10 years = 1 decade
- 100 years = 1 century
Frequently Asked Questions
How do I calculate my age in years?
Subtract your birth year from the current year, then adjust for whether your birthday has passed this year.
What is my age in decimal years?
Divide your total days by 365.25 for decimal years. Example: 13,000 days = 35.59 years.