JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
We believe that if one user has a question, there could be more users who may have the same question. This is why many of our support forum threads are public and available to be searched and viewed. If you’d like help immediately, feel free to search for a similar question, or submit your question or concern.
Thank you for contacting us.
We can use the following formula to calculate the age.
floor ( (CurrentDate - BirthDate) / 365.242 )
Please see the next animation.
In this case we assume that year is by average 365.242 days to consider the leap years. The formula is not 100% correct, but it should work in most of the cases.
If you need any further assistance, please let us know.