Exact age in years, months, days.
Calculates age in years, months, and days from a date of birth to today.
Accounts for leap years so results match how ages are reported officially.
The month-and-day breakdown is useful beyond curiosity — it's the same logic used for things like eligibility cutoffs, insurance age-banding, and legal age thresholds that sometimes hinge on the exact day, not just the year.
Pick a birthdate; the tool returns years, months, and days since that date.
Uses your local browser date, so results reflect your current calendar day.
Full months elapsed since the previous birthday; the remainder becomes days.
Leap years add roughly one extra day every four years, so a precise day count runs slightly ahead of a simple 365-per-year estimate the older you get.