Age Calculator - Calculate Your Exact Age

Age Calculator is a precise date-math utility that determines the exact time elapsed since a specific date of birth to the present moment or any custom target date. Rather than giving a rough estimation, this tool calculates age down to the exact number of years, months, and days. It also provides secondary statistics such as total days lived, days remaining until the next birthday, and a breakdown of age in weeks, hours, and minutes, making it highly useful for documentation, medical records, or fun milestones.

The algorithm handles the full complexity of the Gregorian calendar, including leap years and the differing lengths of each month. It compares the birth date's year, month, and day against the current date, carrying days and months backwards when calculating sub-annual boundaries. This is computed entirely in your local browser using client-side JavaScript, ensuring that sensitive birthday information never leaves your device.