What is JotForm?
JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
At JotForm, we want to make sure that you’re getting the online form builder help that you need. Our friendly customer support team is available 24/7.
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.
I assume that you're referring to a fillable PDF form. Is that correct?
If so, you can go here: https://www.jotform.com/adobe-formscentral-alternative/ and click on the Import Forms button and select the PDF Only option to upload your file.
If you're referring to an online form the procedure would be similar but you need to choose either Forms + Responses (if you want to transfer your submissions from FormsCentral) or Forms Only (if you want to only transfer your forms).
Hope this helps.
Let us know if you require further assistance.