Age Calculator
Free Age Calculator to find exact age in years, months, and days. Compare age difference between two dates, or calculate age on any past or future date.
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About this Age Calculator
This free age calculator finds exact age in years, months, and days. Switch modes to compare age difference between two dates, or calculate age on any past or future date — plus next-birthday countdown and total days lived.
How to use the Age Calculator
- 1
Pick a mode
Choose Your age, Age difference, or Age on a date from the calculator tabs.
- 2
Enter dates
Add a birth date, two dates to compare, or a birth date plus an as-of date.
- 3
Read the results
Review years/months/days plus Quick Insights for total months, weeks, and days.
Why use this Age Calculator
Exact age breakdown
Years, months, and days — not just a rounded year count.
Age difference mode
Compare two dates for sibling gaps, tenure, or event spacing.
Age on any date
See how old someone was or will be on a past or future date.
Birthday countdown
Your age mode includes days until the next birthday.
Frequently asked questions - FAQs
Quick answers about Age Calculator.
Yes. Calculate age, age difference, and age on a date online for free.
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