Chrona: Age CalculatorExact age & date calculator

Chrona is the fastest, cleanest way to work out exactly how old someone is — to the day. No ads, no accounts, no sign-up, and it works completely offline.

Open the app and you're already there: pick a date of birth and Chrona instantly shows the exact age in years, months and days, plus the total days, weeks, hours and minutes, the weekday it fell on, and a countdown to the next birthday.

WHAT MAKES CHRONA DIFFERENT

Need the age as of a specific date — like a test date or a deadline? Flip on "as of a date" and Chrona gives you a precise chronological age (years; months; days), the format used in standardized assessments.

INCLUDED

• Exact age from any date of birth
• Age as of any specific date
• Total days, weeks, hours and minutes
• Day of the week born + next-birthday countdown

PRICING

Everything above is free. Chrona Pro — one-time unlock, no subscription:

• Difference mode: the exact span between any two dates
• Saved people: keep everyone's age live, sorted by whose birthday is next
• Share & export any result in a tap

Private by design. Everything stays on your device — Chrona never collects your data and never needs the internet.

DETAILS DONE RIGHT

Enter any DOB (date of birth) and Chrona gets the details right: leap year birthdays land on the correct day, and every date difference is computed to the exact year, month, week, and day.

FEEDBACK

Made by Peter Zhang. Every email to obeliskclubclub@gmail.com is read personally. Learn more: https://obelisk.club/agecalculator

Terms of Use (EULA): https://obelisk.club/agecalculator/terms