Exact Age Calculator
Calculate exact age in years, months and days, total days, birth weekday, next birthday and optional age difference.
🛡 Privacy-first⚡ Fast🔓 No signup📱 Mobile friendly
🔎 Calculate exact age and age difference
The calculator uses calendar years, months and days rather than only dividing elapsed days by a fixed year length.
It also shows total days, the weekday of birth and the next birthday date, with an optional second birth date for age-gap calculation.
- Exact years, months and days.
- Total days and weekday of birth.
- Next birthday plus optional age difference.
💡 Useful information
Calculate exact age from date of birth in years, months and days, plus total days lived and the countdown to the next birthday.
- Runs directly in a modern browser.
- Works on phones and desktop computers.
- Reuse it without creating an account.
ℹ️ How to use
- Enter the date of birth and keep the reference date as today or choose another date.
- Optionally enter a second date of birth to calculate the age gap.
- Calculate to see exact age, total days, birth weekday, next birthday and the optional age difference.
Share this tool