Age Calculator

Our calculator is extremely accurate for date-based calculations. It properly accounts for:

• Leap years and their extra day
• Varying month lengths (28-31 days)
• Exact time differences down to the second
• Historical calendar accuracy for dates after 1582

The biological estimates are based on medical research averages and provide reasonable approximations, though individual experiences will vary.

Birth time is optional but provides more precise calculations, especially when:

• Calculating age down to hours, minutes, and seconds
• Born near midnight when the date changes
• Determining exact age for legal or official purposes
• Getting the most accurate biological statistics

If you don't know your exact birth time, the calculator defaults to midnight (00:00), which still provides accurate day-based calculations.

Planetary ages show how old you'd be if you lived on other planets. Each planet takes a different amount of time to orbit the Sun:

• Mercury: 88 Earth days = 1 Mercury year
• Venus: 225 Earth days = 1 Venus year
• Mars: 687 Earth days = 1 Mars year
• Jupiter: 4,333 Earth days = 1 Jupiter year
• Saturn: 10,759 Earth days = 1 Saturn year
• Uranus: 30,687 Earth days = 1 Uranus year
• Neptune: 60,190 Earth days = 1 Neptune year
• Pluto: 90,560 Earth days = 1 Pluto year

Your planetary age is calculated by dividing your total days lived by each planet's orbital period.

Yes! Simply enter any birth date to calculate age for:

• Family members and friends
• Historical figures
• Celebrities and public figures
• Pets (though the statistics are human-based)

This is useful for birthday planning, genealogy research, or satisfying curiosity about how long someone has lived.

The biological statistics are based on medical research and represent average values:

• Heartbeats: Average resting heart rate of 70 beats/minute × total time lived
• Breaths: Average breathing rate of 12-20 breaths/minute × total time
• Blinks: Average of 15-20 blinks/minute while awake
• Hair Growth: Average of 6 inches per year (0.5 inches/month)
• Sleep: Based on recommended 8 hours per day

Individual variations are normal based on age, health, activity level, and lifestyle factors.

No, we prioritize your privacy:

• All calculations are performed on our server only for providing results
• We don't store your birth date or personal information
• No data is tracked, logged, or shared with third parties
• Your information is never sold or used for marketing

You can use the calculator with complete confidence in your privacy.

Yes! Use the target date field to calculate how old you'll be on any future date:

• Upcoming milestone birthdays (30, 40, 50, etc.)
• Retirement age
• Graduation dates
• Wedding anniversaries
• Any significant future date

This helps with planning and gives perspective on future milestones.