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Age Calculator

Calculate exact age in years, months, and days from a date of birth.

Leave "As of Date" blank to calculate age as of today — set it to a specific date instead to calculate age as of a future or past date, like a school admission cutoff or eligibility deadline.

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Frequently Asked Questions

Yes — enter a date in the "As of Date" field, such as an admission cutoff or eligibility deadline, and the calculation uses that date instead of today.

For precision — a lot of eligibility rules (school admissions, age-limit cutoffs) care about exact months and days, not just the whole year.

The exact number of days between the date of birth and the "as of" date (or today) — a quick way to see an exact day count for a milestone.