Age Calculator
Exact age in years, months, days — and next birthday. 1. Calculate full years between Date of Birth and Current Date. 2. Calculate full months remaining. 3. Calculate days remaining. 4. Total days lived = Current Date - Date of Birth in days. 5. Next birthday = Next occurrence of Date of Birth (handling Feb 29 on Mar 1 for non-leap years) - Current Date in days. HOW IT WORKS How are leap-year birthdays handled? If you were born on February 29, your age increments on March 1 in non-leap years — the same convention most legal systems use. Validation: Date of birth cannot be in the future; Feb 29 increments on Mar 1 in non-leap years