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.

  • Profile Image

    Date based on an other date field

    Asked by paulmanton on March 11, 2015 at 06:11 AM

    i need the sale end date to be 3000 days after the start date if the item is selected on sale.

    I had this working but for some reason it has stopped i am not sure if i have changed something or if there is a problem


    Page URL:

  • Profile Image
    JotForm Support

    Answered by Welvin on March 11, 2015 at 10:52 AM


    The calculation is working fine here upon checking your form. Please take a look at this screenshot:

    If the form is embedded, then I think that is the issue. Maybe the form is not loaded properly in the page causing it to stop from working. Maybe, a conflict is causing it. If there's a script conflict, we recommend re-embedding the form using our iFrame method: https://www.jotform.com/help/148-Getting-the-Form-iFrame-Code. Kindly try it and update us here.