Age Calculator

Our age calculator provides highly accurate results, accounting for leap years, varying month lengths, and precise day calculations. The tool calculates your exact age in years, months, and days based on the difference between your birth date and the reference date (today or a custom date).

Different age calculators may use slightly different algorithms for handling months and days. Some calculators might simplify by using average month lengths or approximations. Our calculator uses a precise algorithm that accounts for the exact number of days in each month and properly handles leap years, providing a more accurate result.

The calculator automatically accounts for leap years in its calculations. A leap year occurs every 4 years (years divisible by 4), except for years divisible by 100 but not by 400. The JavaScript Date object used in our calculator handles these leap year rules correctly, ensuring accurate day counts even across leap days.

Yes, by selecting the "Custom Date" option, you can calculate the exact time interval between any two dates. This is useful for determining age at a specific point in time, calculating project durations, or finding the exact time between historical events.

Yes, all calculations happen directly in your browser using JavaScript. Your date information is never sent to our servers. This ensures complete privacy and security while providing instant results without waiting for server processing.

Ages on other planets are calculated by dividing your age in Earth days by the length of each planet's year in Earth days. For example, Mercury's year is about 88 Earth days, so your Mercury age would be your Earth age in days divided by 88. This gives you a fun perspective on how old you would be if you lived on different planets in our solar system.

Age milestones are significant ages you'll reach in the future. Our calculator identifies common milestone ages (like 18, 21, 25, 30, 40, 50, etc.) that you haven't reached yet and calculates how many days until you reach them. This feature helps you anticipate and plan for important age-related events in your life.