Calculate your exact age in years, months, and days. Our age calculator also shows total days, weeks, and hours lived, days until your next birthday, your Western zodiac sign, and your generation label. Simply enter your birth date and optionally set a reference date to see your age at any point in time. The calculator accounts for leap years and varying month lengths to give you an accurate result. Age calculations are useful for legal requirements, medical assessments, milestone planning, and simple curiosity about the passage of time.
Saved Presets is a Supporter feature.
Tool History is a Supporter feature.
Tool Notes is a Supporter feature.
Use the date picker to select your date of birth. The calculator accepts any valid date.
By default, the calculator uses today's date. Change the reference date to calculate your age on any past or future date.
See your exact age in years, months, and days, plus total days lived, zodiac sign, generation label, and birthday countdown.
Step 1: Enter Your Birth Date Select or type your birth date. The calculator accepts dates from 1900 to the present. Use the date picker for easy selection or type in the format shown. Step 2: View Your Age Your age appears instantly in years, months, and days. For example: "35 years, 7 months, 15 days." Step 3: Explore Additional Statistics See your age expressed in different units—total days, weeks, hours, and minutes lived. Discover your zodiac sign and more. Step 4: Calculate Age on Specific Dates (Optional) Change the target date to see your age on any past or future date. Great for milestone planning.
Age calculation is more complex than it seems because months have different lengths and leap years add extra days. Our calculator handles these accurately: Years: Complete calendar years between birth and target date. Months: Additional full months beyond the complete years (0-11). Days: Remaining days beyond the full months (0-30). Example: - Birth date: March 15, 1990 - Today: January 21, 2026 - Age: 35 years, 10 months, 6 days
If you were born on February 29, you have a leap year birthday. Our calculator handles this correctly: - In non-leap years, your "birthday" falls on February 28 or March 1 - You still age one year regardless - The days calculation adjusts appropriately
Scenario: Marcus was born on February 29, 2000 (a leap year). He wants to know his age on a non-leap year date. Inputs: - Birth Date: February 29, 2000 - Target Date: February 28, 2025 Results: - Age: 24 years, 11 months, 30 days - Total Days: 9,131 days - Next Birthday: February 29, 2028 (next leap year) - Days Until Real Birthday: 1,097 days Note: In non-leap years, Marcus celebrates on February 28 or March 1, but our calculator correctly tracks his age based on his actual birth date.
Scenario: Emma wants to know how old she'll be when she retires. She was born on October 8, 1975, and plans to retire at 65. Inputs: - Birth Date: October 8, 1975 - Target Date: October 8, 2040 Results: - Age: 65 years, 0 months, 0 days - Total Days: 23,741 days - Total Weeks: 3,391 weeks - Zodiac Sign: Libra Insight: Emma will have lived nearly 24,000 days by retirement—that's over 570,000 hours of life experience.
Enter your birth date into the calculator, and it will compute your exact age in years, months, and days. The calculation accounts for leap years and varying month lengths. For example, if you were born on July 15, 1990, and today is January 21, 2026, you are 35 years, 6 months, and 6 days old.
