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JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.

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    How can I calculate price per square inch in my form?

    Asked by kevinannala2 on December 11, 2016 at 01:42 PM

    Hi, I've seen some references to this, but all are confusing as all hell. I simply need to create a calculator where the user enters their length, and width, and it automatically shows them the final price. I need to change the price per square inch, as I have 10 products all with different square inch pricing.

    I do not want to link this to any checkout, or payments, just straight up show the price.

    So, for the first one, I'd like to start with .11 cents per square inch. User enters length, and width for the total square inches which shows as the price of .11 cents per square inch.

    Thank you for any help. How to enter this is confusing me big time. Any help with a template greatly appreciated.

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    JotForm Support

    Answered by BDAVID on December 11, 2016 at 04:18 PM

    For the data the user will enter, you can use Text Box fields:

    What would be the formula? You can enter it in the Form Calculation widget, example: 


    Let us know if you need more help.

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    Answered by kevinannala2 on December 12, 2016 at 01:40 AM

    Thank you, but I do not see the validations option?

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    Answered by kevinannala2 on December 12, 2016 at 02:00 AM

    I GOT IT!!!!! THANKS! You have no idea how painful this pursuit has been LOL

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    JotForm Support

    Answered by olivia on December 12, 2016 at 02:10 AM


    We are glad to know that your issue is resolved.

    However, let me clarify the issue about how to set up "Validation".

    First, you need to select your form field, and then, you can see "Validation" in Properties.

    After that, you can set up validation for your form fields.

    If you need any further assistance, please feel free to let us know.

    Thank you.