Free browser tool
Age Calculator
Enter a date of birth to see the exact age in years, months and days, plus total weeks and days, the weekday of birth and a countdown to the next birthday. Change the second date to find an age on any day. Nothing you enter leaves your device.
Built with love by Shushant Lakhyani. Building bestproductivityresources.com
Enter both dates to see the age.
Age is counted in whole calendar months, then the days left over, using the Gregorian calendar. If a month has no matching day (for example a 31st or 29 February), the last day of that month is used, so people born on 29 February move up a year on 28 February in non-leap years. Some laws and official forms count this differently, so check with the relevant authority for legal or official purposes.
Built with love by Shushant Lakhyani. Building bestproductivityresources.com
Private by design. This tool runs entirely in your browser. Nothing you enter or select is uploaded, saved, logged or shared, no AI service is used, and closing the tab clears everything.
Disclaimer. This free tool is provided "as is", without warranties of any kind, for general information and convenience. Results come from standard formulas and are rounded for display, so they may differ slightly from other calculators. Double-check anything important. You use it at your own risk. See the Disclaimer, Terms of Use and Privacy Policy.
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