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Age Calculator

Calculate exact age in years, months, days and weeks from any date of birth. Works for past and future dates.

100% Private Browser-Based Free Forever

Age Calculator

Date of Birth

Age As Of

How to Use Age Calculator

Enter date of birth

Optionally change the "as of" date

See exact age breakdown instantly

Why Use This Tool

100% Private

Your data never leaves your browser. Nothing is uploaded to any server.

Instant Results

Modern browser APIs deliver results in milliseconds with no waiting.

Free Forever

No subscriptions, no credits, no paywalls — ever.

Frequently Asked Questions

Does it account for leap years?

Yes — calculations are precise to the day including leap years.

Can I calculate age from a future date?

Yes — enter any date as the "as of" reference.

What units are shown?

Years, months, days, total weeks, total days and next birthday countdown.

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