Age Calculator

Life Stages

Infant

0-1 year

Toddler

1-3 years

Child

4-12 years

Teenager

13-19 years

Adult

20-64 years

Senior

65+ years

Real Scenario: Tom`s Age for Passport Application

Tom is applying for a passport and needs his exact age as of the application date. His date of birth is January 15, 2000 and the form asks for his age on December 14, 2025.

  • Tom enters his DOB in the “Date of Birth” section.
  • He sets “Calculate Age As Of” to the application date.
  • The calculator shows his precise age (years, months, days) and total days lived.
  • It also shows how many days are left until his next birthday — useful for eligibility cutoffs.

This is especially helpful when age rules depend on a specific date (admissions, exams, jobs, insurance, retirement, etc.).

Common Uses of an Age Calculator

Eligibility & Forms

Useful for government forms, exams, school admissions, and job eligibility where an “as of date” matters.

Next Birthday Planning

Quickly see your next birthday date and how many days remain—great for planning events.

Time Lived Breakdown

Convert your age into weeks, days, hours, minutes, and seconds for fun or tracking milestones.

Important Tip

For accurate results, ensure the month/day/year are valid (example: Feb 29 only works in leap years).

Age Facts

  • The average human heart beats about 2.5 billion times in a lifetime
  • Your age in dog years would be approximately 7 times your human age
  • you have lived through about 25% of a century

Quick Examples

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