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.

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    Can field auto calculate?

    Asked by TracyMoralee on January 07, 2016 at 04:57 PM

    I am creating a form to use for employees to enter their time worked like a timesheet. Is there a way to have the form auto calculate the total number of hours worked? I have a field where they add their start time, a field to enter their end time and then another field where they select whether they took a 30 min, 45 minute or 1 hour lunch or none. 


    Thank you!


    PS I am using the 24 hour clock

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    JotForm Support

    Answered by EltonCris on January 07, 2016 at 10:56 PM

    Yes, form calculation is possible. Here's a guide for that: http://www.jotform.com/help/259-How-to-perform-calculation-in-the-form

    If you need further help, let us know.

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    Answered by TracyMoralee on January 08, 2016 at 01:28 AM

    Thank you! I will try that!

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    JotForm Support

    Answered by EltonCris on January 08, 2016 at 02:37 AM


    Feel free to let us know if you need further assistance.


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    Answered by Jeanette on January 11, 2016 at 04:13 PM



    I have added the equation using a form calculation widget and it is not calculating. I am not sure what I am doing wrong.


    Thank you!

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    JotForm Support

    Answered by Chriistian on January 11, 2016 at 11:24 PM



    It looks like there's a problem with the formula. Once the user selects the 30 minute or 45 minute option, the formula subtracts it by either 30 or 45.

    It also looks like the calculation values for the options are empty. Y


    You can check the calculation value by clicking on the gear icon then select Edit Properties.


    Then to fix the formula, add these values to the calculation field: 




    Do inform us if you need further assistance,