1. What is the Age Calculator?

The Age Calculator calculates precise age in years (with decimals) based on the difference between current date/time and birth date/time, accounting for leap years.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( Current\ Date\ Time \) — Current or specified date and time
• \( Birth\ Date\ Time \) — Birth date and time
• \( 365.25 \) — Average days per year (accounts for leap years)
• \( 24 \) — Hours per day
• \( 3600 \) — Seconds per hour

Explanation: The calculator converts the time difference to seconds, then divides by the number of seconds in a year (accounting for leap years) to get precise age.

3. Importance of Age Calculation

Details: Precise age calculation is important for medical applications, legal documents, scientific research, and any application requiring accurate time measurements.

4. Using the Calculator

Tips: Enter your birth date and time. Optionally specify a different current date/time (for historical calculations or future projections). The calculator will show both precise decimal age and traditional year/month/day breakdown.

5. Frequently Asked Questions (FAQ)

Q1: Why use 365.25 days per year?
A: This accounts for leap years (extra day every 4 years) making the calculation more accurate over long periods.

Q2: How precise is the calculation?
A: The calculation is precise to the second, showing results with up to 6 decimal places for maximum accuracy.

Q3: Can I calculate age at a future date?
A: Yes, by entering a future date in the "Current Date" field, you can project your age at that time.

Q4: Does timezone affect the calculation?
A: The calculation uses the local timezone of your browser. For absolute precision across timezones, use UTC timestamps.

Q5: Can I calculate age between two specific dates?
A: Yes, enter the earlier date as "Birth Date" and the later date as "Current Date" to calculate the exact time between them.