Age Calculator
Calculate age in years, months, and days from a birthdate to a given date.How to Use
- 1Select your date of birth using the date picker in the 'Date of Birth' field.
- 2Optionally set a target date to calculate age as of that specific date (defaults to today).
- 3Click 'Calculate Age' to see your exact age in years, months, and days.
- 4The result also shows your total months, weeks, days, hours, and minutes of life.
- 5The 'Next Birthday' section shows how many months and days remain until your next birthday.
About Age Calculation
How Age is Calculated
Age is calculated by finding the difference between the birth date and the target date (usually today). The result accounts for varying month lengths and leap years: e.g., someone born on Feb 29 in a leap year typically celebrates on Feb 28 or Mar 1 in non-leap years. The exact count includes years, months remaining after full years, and days remaining after full months.
Legal and Cultural Age Systems
Most Western countries use the anniversary system (age increases on the birthday). East Asian cultures traditionally use the East Asian age reckoning (born at age 1, increases on New Year). In South Korea, a 2023 law standardized the Western system. Some countries calculate age differently for legal purposes like drinking, voting, or retirement.
Interesting Age Facts
A human heart beats about 100,000 times per day, so by age 70 it has beaten about 2.5 billion times. The oldest verified human was Jeanne Calment (France) who lived to 122 years and 164 days. In terms of total days, a 30-year-old has lived approximately 10,950 days.