Age Calculator
Calculate age today, on a custom reference date, or between any two dates with shareable birthday countdown insights.
What this calculator gives you
Check current age, age on a custom date, or compare any two calendar dates.
See weekday, zodiac sign, leap-year context, and next-birthday countdown details.
Copy the result card, download it, or share the exact birthday countdown state via URL.
Why use the age calculator?
This free age calculator helps you calculate age from date of birth instantly, measure date differences, and create a shareable birthday countdown link. It is useful for forms, official records, age verification, event planning, and everyday date calculations.
FAQs
Can I calculate age on a future reference date?
Yes. Switch to the custom reference date mode and choose any date on or after the date of birth.
Can I compare two dates without using a birth date?
Yes. Use the compare mode to measure the exact span between any two dates.
Is leap year math handled?
Yes. The calculator uses calendar-aware date differences and also highlights leap-year insights.
What does the share link include?
It stores the selected mode and dates in the URL so the exact result can be reopened and shared.