FREE ONLINE TOOL
Age Calculator
Enter a date of birth to calculate age today.
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About this calculator
Calculate your age from your date of birth in years, months and days. Results are calculated locally in your browser, so you can use the tool without creating an account.
Useful date calculation tips
Date totals can vary depending on whether you include the starting day, ending day, weekends or public holidays. HowLongKit states the method used by each calculator so results are easy to understand.
Frequently asked questions
How is age calculated?
The calculator compares your birth date with today's local date and adjusts for whether your birthday has occurred this year.
Is my birth date stored?
No. The calculation runs in your browser and this static version does not send your entered birth date to HowLongKit.