나이 계산기

An Age Calculator is a specialized tool that precisely calculates a person's age based on their birth date. Unlike simple year subtraction, this calculator provides comprehensive age breakdowns including years, months, and days, along with additional insights like total days lived, weeks, hours, and even the countdown to the next birthday.

This tool handles complex date calculations automatically, accounting for leap years, varying month lengths, and timezone differences to ensure accurate results. Whether you need to know someone's exact age for legal documentation, medical records, or personal curiosity, the Age Calculator provides instant and reliable results.

1. Administrative & Legal Requirements

Government documents like passports, national ID cards, and visa applications often require precise age verification. Schools, universities, and educational institutions use age calculators to verify enrollment eligibility and grade placement. Insurance companies need accurate age data for policy calculations and premium determinations.

2. Human Resources & Payroll

HR departments use age calculators to determine employee eligibility for benefits, retirement plans, and age-restricted programs. Payroll systems integrate age calculations for age-based salary adjustments, retirement contributions, and compliance with labor laws regarding minimum working age or retirement age.

3. Healthcare & Medical Services

Medical professionals require precise age information for patient records, medication dosing (especially for pediatrics and geriatrics), BMI calculations, and age-specific health screenings. Hospitals and clinics use age data to determine appropriate treatment protocols and to comply with age-related medical regulations.

4. Legal & Compliance

Age verification is crucial for legal compliance in various scenarios: confirming individuals meet minimum age requirements for contracts (18+), alcohol and tobacco purchases (21+ in many jurisdictions), driver's licenses, voting rights, and consent laws. Legal professionals use accurate age calculations in court cases, custody arrangements, and estate planning.

5. Parenting & Child Development

Parents and pediatricians track children's ages in precise detail to monitor developmental milestones, vaccination schedules, and growth charts. Parenting apps use age calculators to provide age-appropriate advice, track baby's age in weeks and months, and send timely reminders for health checkups.

6. Event Planning & Celebrations

Calculate days remaining until birthdays, anniversaries, or special milestones. Plan surprise parties with accurate countdown timers. Determine milestone birthdays (18th, 21st, 50th) and calculate how many days you've been alive or married.

7. Financial Planning & Retirement

Financial advisors use age calculators to determine retirement eligibility, pension start dates, and age-based investment strategies. Calculate years until retirement, determine when to claim social security benefits, and plan long-term financial goals based on precise age calculations.

8. Sports & Competitions

Sports organizations use age calculators to verify athlete eligibility for age-group competitions, youth leagues, and senior tournaments. Schools and athletic programs ensure participants meet age requirements for different competition levels and categories.

1. Enter Birth Date: Use the date picker or manually type the birth date in the format shown. The calculator accepts various date formats for your convenience.
2. Set Target Date (Optional): By default, the calculator uses today's date. However, you can specify a different date to calculate age at a specific point in time - useful for historical records or future projections.
3. Click Calculate Age: The calculator instantly processes the dates and displays comprehensive results including exact age, total breakdowns, and additional information.
4. View Results: See your age broken down in multiple ways - years/months/days, total days lived, weeks, months, hours, minutes, and even when your next birthday is.
5. Export Data: Copy the results as formatted text, download as JSON for data processing, or use the copy buttons for quick sharing.

Example Calculation

If someone was born on May 21, 1996, and today is November 23, 2025:

• Age: 29 years, 6 months, 2 days
• Total Days: 10,779 days
• Total Weeks: 1,539 weeks
• Next Birthday: 180 days
• Born on: Tuesday