Calculating someone's exact age, not just in years, but in years, months, and days, is useful for legal documents, birthday planning, age verification, and curiosity about milestones. This age calculator takes a date of birth and instantly computes the exact age as of today (or any chosen reference date), broken down into years, months, and days, accounting correctly for leap years and varying month lengths. It can also show the total number of days lived, which is a fun statistic for milestone celebrations. Whether you need precise age calculations for official purposes or just want to know exactly how old you are down to the day, this tool provides instant accuracy.