The Simple Age Calculator provides a quick calculation of your age from your date of birth to today (or any specified date). The Chronological Age Calculator provides more precise calculations that account for leap years and exact day counts, making it suitable for medical, academic, and legal purposes where precision is critical.

Both calculators are highly accurate. The Simple Age Calculator provides standard age calculations, while the Chronological Age Calculator accounts for leap years and provides exact day counts. Both use JavaScript's built-in date functions to ensure precision.

Chronological age is often required for medical assessments, academic eligibility, sports competitions, and legal documentation. It provides the exact age accounting for leap years, which is important when precise age determination is needed for official purposes.

The "Calculate As Of" date allows you to calculate your age on a specific date rather than today. This is useful for determining how old you were or will be on a particular date, such as for school enrollment, insurance policies, or historical records.

No, your date of birth is not stored or shared. All calculations are performed locally in your browser using JavaScript. No data is sent to any server or third party. Your privacy is fully protected.

While our calculators provide accurate results, they are intended for informational purposes only. For official documents, please consult with the relevant authorities or use officially certified age calculation methods as required by your institution or government.