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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    I need phone number validation

    Asked by mitchbarney on July 03, 2011 at 12:31 AM


    Can you add phone number validation to Jotform?

    So if someone types in an incomplete phone number, Jotform will ask them to fix it?


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    JotForm Support

    Answered by mliz on July 03, 2011 at 12:45 AM

    Hi Jason,

    As of the moment there is no validation for the Phone Number field.
    All it does is to check whether there was an entry or not if the field is
    set to required.

    Nevertheless I have added this to our feature request list.

    Thanks for using JotForm.


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    Answered by allanftd on July 03, 2011 at 12:48 AM

    Hi Jason,

    For now, you can substitute the Phone Number field with a Text Box and turn on the number validation option. Perhaps providing a means to set up a minimum value as well as adding the number validation in Phone Number field will be the long term solution. I shall endorse these features to our Developers for further action.

    Please let us know if we can be of further assistance. Thank you for using JotForm!


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    Answered by mitchbarney on July 03, 2011 at 12:58 AM




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    JotForm Support

    Answered by kenneth on March 25, 2013 at 06:06 AM


    We have added a new feature into the Phone Question, we called it the Phone masking, the validation of phonenumber input is now depends on how the form owner put the masking.

    For example. the default masking is ####-#####, the # symbols represent the numbers to be entered. Try it and let me know your comments. Please try to clean your browser cache to get the latest updates.

    Thank you,

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    Answered by rduong on January 22, 2016 at 04:42 AM


    It's about the value of phone number.

    Your solution works, but it's not for Firefox. 

    I tried on Chrome and Internet Explorer, and it's good. Very weird.

    I send you a screenshot about that.


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    JotForm Developer

    Answered by mert on January 22, 2016 at 09:46 AM

    Hi there,

    On my tries, I didn't replicate the same issue with you. Please, see it from the below:


    It looks like your Firefox's scripting option is disabled, please use the following steps and retry to use "Phone Number" field again and please, don't forget the let us know.