Age Calculator
Calculate your exact age in years, months and days from your date of birth.
Years
26
Months
9
Days
22
Total Days Lived
9,792
How to Use This Calculator
1. Enter your date of birth.
2. Optionally change the "as of" date (defaults to today).
3. View your exact age in years, months and days.
Formula & Explanation
Age is calculated by finding the difference between the target date and date of birth, carrying over borrowed days/months for calendar accuracy (accounting for varying month lengths and leap years).
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Frequently Asked Questions
It subtracts the date of birth from the target date, adjusting for calendar month lengths and leap years to give an accurate years, months and days breakdown.
Yes, change the "as of" date field to any date to calculate age as it was, or will be, on that specific date.
Because leap years add an extra day roughly every 4 years, so total days is more accurate than a simple years × 365 calculation.
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