Age Calculator
Calculate your exact age in years, months, and days from your birth date. Find age for any date.
⏰ Everyday📐 Age = Today - Birth Date
Birth year
Birth month 1-12
Birth day
Please enter valid values.
Formula & Reference
| Variable | Formula | Units |
|---|---|---|
| Age Calculator | Age = Today - Birth Date | years, months, days |
Step-by-Step Examples
Example 1
Born June 15, 1990
Birth date: June 15, 1990.
- Age calculated from today's date
- Shows years, months, days, and total days
✓ Live calculation
Example 2
Year 2000 Birthday
Born January 1, 2000.
- Turning 25 in 2025
- Easy millennial age check
✓ 25 years in 2025
Example 3
Legal Age Check
Born March 20, 2007.
- On March 20, 2025: exactly 18 years
- Legal adult as of that date
✓ 18 on March 20, 2025
Real-World Applications
Everyone
Find your exact age in years, months, and days.
Legal Professionals
Verify age for legal eligibility.
HR
Calculate employee age for benefits eligibility.
Birthday Planners
Count down to milestone birthdays.
Common Mistakes to Avoid
⚠️
Off-by-one on birthdays
Age changes at midnight on your birthday. You are 34 on June 14 and 35 on June 15.
⚠️
Leap year birthdays
Born February 29? You have a birthday every 4 years. Most people celebrate Feb 28 or Mar 1 otherwise.
Frequently Asked Questions
What is my exact age? ▾
Enter your birth date above for a precise calculation in years, months, and days.
How old am I in days? ▾
Multiply years by 365.25 (accounting for leap years) and add remaining months and days. This calculator shows the total automatically.
What age do I qualify for Medicare? ▾
Medicare eligibility in the US begins at age 65. Social Security full retirement: 67 for those born 1960 or later.