Age Calculator
Enter a date of birth to calculate exact age in years, months, days and total days lived.
Your age
Your result will appear here.
What is Age Calculator?
Age Calculator computes exact chronological age from a date of birth to the current date. It resolves calendar month length variations and leap years using calendar date arithmetic, reporting a breakdown in completed years, months, days, alongside total lifetime days lived.
How to use Age Calculator
- 1Select or enter your date of birth using the date picker.
- 2The calculator automatically compares your birth date against today.
- 3View your completed years, months, days, and total lifetime days in the results panel.
Key features
Exact Calendar Breakdown
Reports completed chronological years, months, and remaining days based on calendar dates.
Total Lifetime Days Counter
Computes total elapsed calendar days lived since birth.
Leap Year & Month Length Accuracy
Properly balances variable month lengths (28 to 31 days) and leap years without arbitrary 30-day assumptions.
Private Local Processing
Your date of birth stays confidential in your browser runtime and is never logged or transmitted.
Examples & use cases
Adult Age Milestone
Age calculation for birth date June 15, 1995 as of October 15, 2026
Date of birth: 1995-06-15
31 Years, 4 Months, 0 Days
Leap Day Birth Date
Age calculation for birth date February 29, 2020 as of March 1, 2021
Date of birth: 2020-02-29
1 Year, 0 Months, 0 Days
Frequently asked questions
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