Age Calculator
Free age calculator. Enter your date of birth to find your exact age in years, months, and days. Also shows total days, weeks, and hours lived.
Free Age Calculator
Enter your date of birth to instantly find your exact age in years, months, and days — plus your total months, weeks, days, and hours lived. You can also calculate your age at any specific past or future date.
How to Use the Age Calculator
- Enter your date of birth in the first field.
- Optionally enter a target date to calculate your age on that specific day. Leave it blank to use today.
- Click Calculate age to see your results.
How is Age Calculated?
Age is calculated by counting the number of full years, months, and days between your date of birth and the target date. A year is complete only when the same calendar date has passed. For example, someone born on July 15, 2000, turns 25 on July 15, 2025.
Why Do People Calculate Their Age?
Age calculators are useful for filling out forms, verifying eligibility requirements (retirement, legal age, insurance), planning birthday milestones, and satisfying simple curiosity. Our tool handles leap years and varying month lengths automatically.