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About This Tool
Age Calculator computes the exact age in years, months, and days between a date of birth and any target date, defaulting to today. It is used for eligibility checks, anniversary calculations, and any scenario where you need a precise age rather than a rough estimate.
Simple subtraction of years misses the day and month — someone born on December 31 has a very different age on January 1 than someone born January 1. This tool handles that correctly.
Tip: You can set the target date to a future date to calculate how old someone will be at a future event — useful for age-based eligibility deadlines.