Age Calculator
Calculate your exact age in years, months, and days with high-precision calendar arithmetic.
How to Calculate Your Exact Age
- Select your birth date from the date picker.
- Optionally specify an alternate target date if calculating your age on a past or future milestone.
- Click Calculate Age.
- Review your exact age in years, months, and days, along with total weeks, days, hours, and next birthday countdown.
Features
Leap Year Aware
Fully accounts for February 28/29 leap day shifts without day inaccuracies.
Granular Breakdown
Provides exact counts for total months, weeks, days, and total hours lived.
Birthday Countdown
Calculates the number of days remaining until your next celebration and day of week.
Private & Local
Your date of birth is processed strictly in your browser and never transmitted.
Frequently Asked Questions
Our engine uses exact Gregorian calendar date boundaries. If you were born on February 29th of a leap year, it calculates your birthday in non-leap years on February 28th and preserves exact day increments.
Yes. You can adjust the "Age as of Date" field to any date on or after your birth date to see how old you were or will be on that specific day.