The best free age calculator works out an exact age in years, months and days from a date of birth, instantly in the browser. It is free with no account and does the math locally so no personal date is uploaded.
Working out an age by hand is fiddly because months have different lengths and leap years get in the way. The best calculator takes a date of birth and a target date and returns the precise age in years, months and days, which is what you need for forms, eligibility checks or simple curiosity, without you counting on your fingers.
A date of birth is personal, so it should not have to travel to a server. Because the calculation runs in your browser the date stays on your device and the result appears the moment you enter it. There is no account and no cost, and the page keeps working offline once it has loaded.
Yes. It returns the exact age in years, months and days, not just the year count.
No. The calculation runs in your browser, so the date stays on your device.
Yes. There is no account or cost.