Age Calculator
Calculate your exact age in years, months, days, hours, and even minutes from your date of birth to today or any target date.
Calculate Age
Your Age
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Years
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Months
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Days
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Total Days
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Total Hours
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Next Birthday
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How to Use
- Enter your date of birth in the first field.
- Optionally change the "as of" date (defaults to today).
- Click Calculate Age.
- See your exact age broken down in every unit.
Tip: You can also calculate someone else's age by entering their birth date and a past or future "as of" date.
What is an Age Calculator?
An age calculator determines the precise time elapsed between a person's date of birth and a reference date. Unlike simple subtraction of years, a proper age calculator accounts for leap years, varying month lengths, and the exact day offset — giving you an accurate result down to the day, hour, and minute.
Our free online age calculator provides results in multiple formats: total years, remaining months, remaining days, total days lived, total hours, and a countdown to the next birthday.
Example Usage
Example: If you were born on March 15, 1990 and today is June 10, 2025:
Age
35 years, 2 months, 26 days
Total Days
12,870 days
Total Hours
308,880 hrs
Next Birthday
279 days away
Frequently Asked Questions
How is age calculated accurately?
Age is calculated by finding the difference between the birth date and the reference date. The calculator accounts for leap years and the different number of days in each month. It first calculates full years, then remaining full months, then remaining days.
Can I calculate age for a future date?
Yes! Simply set the "Calculate Age As Of" field to any future date. This is useful for planning milestones, retirement calculations, or checking age requirements for future events.
Does the calculator account for leap years?
Absolutely. The total days and hours calculations correctly account for leap years (years divisible by 4, excluding century years unless also divisible by 400).
Is my date of birth stored anywhere?
No. All calculations happen entirely in your browser using JavaScript. No data is sent to any server, and nothing is stored or logged.