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Age Calculator
Calculate how old someone is from a date of birth, with exact age in years, months, days, total elapsed days, and next birthday timing.
Date-only calendar calculation
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Everyday Calculators for Age & Dates
Answer everyday calendar questions with clear inputs and readable results. The current collection starts with exact calendar age, elapsed days, and the timing of a next birthday, all from dates you choose.
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Choosing the Right Tool
The Age Calculator uses date-only calendar rules rather than time zones or hours of birth. Its results are informational, not a determination of legal age or eligibility. Read its leap-day and month-end assumptions when those dates matter.