Age Calculator
Calculate your precise age down to the minute and see exactly how long until your next birthday. All data stays in your browser.
Your Details
Results update instantly as you type, and refresh automatically every minute.
Pro Tip
Entering your birth time lets us calculate your precise age down to the minute.
Enter a date of birth to get started.
Frequently Asked Questions
calendar_monthHow is age calculated?
Age is calculated based on the precise difference between your date of birth and the current system date and time, accounting for Gregorian calendar variations.
updateIs leap year accounted for?
Yes, our algorithm correctly identifies leap years (like February 29th) to ensure day-level precision over long periods of time.
securityWhere is my data stored?
Nowhere. As part of ToolXero's commitment to privacy, all calculations happen instantly in your browser's memory and are never sent to a server.
groupCan I calculate age for others?
Certainly. You can input any historical date to find out the precise duration between then and now, whether it's for a person, a pet, or an event.
boltDoes it update automatically?
Yes. Results recalculate instantly whenever you change the date or time, and refresh automatically every minute so the numbers stay current if you leave the page open.