Age Calculator
Forms want an exact age on a specific date, not a rounded year. This gives years, months and days, the total days lived, the weekday you were born on, and how long until the next birthday.
🛡️ Runs on your device — nothing is uploaded
More options
Results update as you type — nothing else to press.
How it works
- Pick the date of birth.
- Leave the second date blank for today, or set it for a specific date.
- Read the exact age and the next-birthday countdown.
Good to know
FormatsAny date of birth
- Filling in an application that asks for exact age
- Checking eligibility on a specific date
- Planning a birthday
Questions
What is Korean age?
The traditional Korean count (세는나이), where you're one at birth and everyone gains a year at New Year. Korea moved to international age officially in 2023, but the old count is still used socially.
Can I calculate age at a past or future date?
Yes — set the second date. Useful for eligibility cut-offs.
Does it handle leap years?
Yes. A 29 February birthday is handled properly and the day totals are exact.
🔒 Processed entirely in your browser — nothing is uploaded, nothing is stored.