Age in Years, Months, and Days Calculator
Calculate exact age breakdown with precision down to individual days
Calculate Age in Years, Months, and Days
Select your birth date
Calculate age as of this date
Example Calculation
Sample Birth Date
Birth Date: March 15, 1990
Current Date: August 12, 2025
Calculation Process:
- Years: 2025 - 1990 = 35 years
- Months: August (8) - March (3) = 5 months
- Days: Since birth date hasn't passed this month
- Total days calculation accounts for leap years
Result
Exact Age: 35 years, 4 months, 28 days
Total Days: ~12,933 days
Generation: Millennial
Age Categories
Age Facts
Average human lifespan is ~79 years globally
You've had a birthday every 365.25 days on average
Each year contains exactly 8,760 hours
Leap years occur every 4 years (with exceptions)
Understanding Age Calculation
How We Calculate Age
Our calculator uses precise date arithmetic to determine your exact age in years, months, and days. Unlike simple year subtraction, we account for the specific day and month of birth.
Calculation Method
- •Start with year, month, and day differences
- •Adjust for negative days by borrowing from months
- •Adjust for negative months by borrowing from years
- •Account for varying month lengths
Why Precision Matters
Exact age calculation is important for legal documents, medical records, insurance policies, and many official purposes where precise age verification is required.
Applications
- Legal: Age verification for contracts, voting
- Medical: Pediatric development tracking
- Insurance: Premium calculations
- Personal: Milestone celebrations
Note: Our calculator accounts for leap years and varying month lengths for maximum accuracy.