Age Calculator

Our age calculator is extremely accurate, calculating age down to the exact day, hour, and minute. It automatically accounts for leap years, varying month lengths, and handles all calendar complexities. The algorithm uses precise date arithmetic to ensure reliable results for any age calculation, making it suitable for official documentation and professional use.

To calculate age manually: subtract your birth year from the current year, then adjust for the month and day. If your birthday hasn't occurred this year, subtract 1 from the result. For example, if born on March 15, 1990, and today is January 10, 2025: 2025 - 1990 = 35, but since the birthday hasn't passed, you're 34 years old. Our calculator automates this process and handles complex scenarios like leap years.

Yes! Switch to "Age at Date" mode to calculate someone's age at any specific past or future date. This feature is useful for historical research, planning future events, determining ages at specific milestones, legal documentation, or calculating age differences between dates. Simply enter the birth date and target date for precise calculations.

Our calculator automatically accounts for leap years in all calculations. Leap years occur every 4 years (with exceptions for century years). People born on February 29th will have their birthday celebrated on February 28th in non-leap years for age calculation purposes. The algorithm correctly handles the extra day in leap years, ensuring accurate age computation regardless of calendar complexities.

The calculator displays both Western zodiac signs (based on birth month and day) and Chinese zodiac animals (based on birth year). It also provides the zodiac element, generation classification, and additional astrological insights. Western zodiac includes signs like Aries, Taurus, etc., while Chinese zodiac features animals like Rat, Ox, Tiger, with corresponding elements like Metal, Water, Wood, Fire, and Earth.

While our calculator provides highly accurate results, always verify age calculations with official documentation for legal purposes. The tool is excellent for preliminary calculations, form filling, insurance applications, and general reference. For binding legal matters, retirement planning, or official government documents, consult legal professionals and use certified documentation alongside our calculator results.

Exact age is needed for insurance applications, medical treatments, employment verification, sports eligibility, educational programs, legal contracts, retirement planning, and visa applications. It's also useful for tracking life milestones, planning celebrations, calculating relationship durations, determining senior discounts, and academic assessments. Healthcare providers use precise age for pediatric and geriatric care protocols.

Different cultures have varying age calculation systems. In Western countries, age starts at 0 and increases on birthdays. Some East Asian cultures traditionally start age at 1 and add a year at New Year rather than birthdays. These differences stem from historical, religious, and cultural traditions. Our calculator uses the standard Western system, which is most commonly used internationally for official documentation and legal purposes.

Yes, your privacy is completely protected. All calculations are performed locally in your browser - your birth date and personal information never leave your device or get sent to our servers. We don't store, track, or collect any personal data entered into the calculator. This ensures complete privacy and security for all your age calculations and personal information.

Chronological age is the actual time elapsed since birth, which our calculator determines based on calendar dates. Biological age refers to how well your body is functioning relative to your chronological age, influenced by lifestyle, genetics, and health factors. While our calculator provides precise chronological age, biological age requires medical assessment and can vary significantly from chronological age based on individual health and lifestyle factors.