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.
Alternatively, you can change your form's font by using "Designer".
To open "Designer":
In "Designer", you need to click "Font Options" and you will see the font options in dropdown menu.
Now, you change the whole font for the form, but not for the "Text" field. Because it has own font option.
To change the "Text" font:
While "Text" field selected, click to "Edit HTML". Now, you see the text tools. All you need to do is change the font family and click to "Complete".
If you have more questions, don't hesitate to ask.