Q1: How is age calculated from a birth date?
Age is calculated by finding the difference between the birth date and today's date. The calculator accounts for years, months, and days separately, handling month-end and year transitions correctly. For example, if someone was born on March 15, 1990, and today is February 10, 2024, they are 33 years, 10 months, and 26 days old.
Q2: Why does age show years, months, and days?
Showing age in years, months, and days provides a complete and precise age calculation. This format is useful for legal purposes, medical records, and when you need exact age information. It's more accurate than just years, especially for children or when precise age matters.
Q3: How does the calculator handle leap years?
The calculator automatically accounts for leap years when calculating age. February 29th is handled correctly, and the age calculation adjusts properly for leap year birthdays. The date arithmetic accounts for varying month lengths and leap years.
Q4: Can I calculate age for future dates?
The calculator is designed for calculating age from birth date to today. If you enter a future birth date, it will still calculate but may show negative values or unexpected results. For age calculations, always use a past birth date.
Q5: Is the age calculation accurate across time zones?
The calculator uses your browser's local date/time, which is based on your device's timezone settings. For precise age calculations across time zones (e.g., legal purposes), you may need to account for timezone differences, especially for dates near midnight.
Q6: How do I calculate age in different formats?
The calculator shows age in years, months, and days. To convert: Total days = years × 365.25 + months × 30.44 + days. For age in weeks, divide total days by 7. For age in hours, multiply total days by 24. The format shown (years, months, days) is the most commonly used.