Date of Birth

Calculate Age As Of

Current Date and Time

Specific Date

Calculate Age Reset

Age calculation might seem straightforward, but there are several methods to calculate age with varying levels of precision:

Years, Months, and Days Method

This is the most common method that calculates the exact number of completed years, months, and days between two dates:

• Years are counted as completed calendar years
• Months are counted as completed months after the year calculation
• Days are counted as remaining days after years and months are calculated

Decimal Age Method

This method expresses age as a decimal number (e.g., 25.3 years):

• Calculated by dividing the total number of days by 365.25 (accounting for leap years)
• Provides a precise numerical representation of age

Total Units Method

This method converts the entire age into a single unit of time:

• Total months, weeks, days, hours, minutes, or seconds since birth
• Useful for specific calculations or statistical purposes

Our Age Calculator is a precise tool that helps you determine your exact age in various units of time. It takes into account leap years, varying month lengths, and can calculate age as of any specific date.

Features:

• Calculate age as of current date or any specific date
• View age in years, months, days, hours, minutes, and seconds
• Find out when your next birthday is
• Discover your Western and Chinese zodiac signs

Whether you need to calculate your exact age for official documents, are curious about how many days you've been alive, or want to know how long until your next birthday, this calculator has you covered.

Age Milestones Around the World

• 18 years: Legal adulthood in most countries
• 21 years: Traditional age of majority in many cultures
• 60 years: Retirement age in many Asian countries
• 100 years: Centennial celebration, often recognized by governments

Did You Know?

• The average human lifespan is about 73 years globally
• A person born on February 29 (leap day) only gets to celebrate their actual birthday once every four years
• The oldest verified person ever lived to 122 years and 164 days
• In some East Asian cultures, babies are considered 1 year old at birth