How to Perform Form Calculation Using a Widget

Last Update: May 20, 2017

Wondering how you can calculate a total based on the option selected by the user from your form? Calculation is now possible with Jotform. There are two ways on this, you can use Conditional Logic or you can use the Form Calculation widget. In this guide, we will discuss how we can use the widget to perform a calculation. 

Video Tutorial


Below are the steps to help you better:

1. Click on Form Elements.

2. Click on the Widgets tab, search for "Form Calculation" and add it to your form.

3. Now as an example, we will calculate the price of the product selected on a radio button multiplied to a quantity field. Here's how it looks like:

Note: If you want to assign a calculation value on a radio button, drop down or check box field, then you need to check this guide: How to Assign Calculation Value 

4. Click on the wand icon.

5. And then click on the  "Add Field" button, in order to add fields you want to be part of your formula.

6. Finally, once you are done with the formula, click on the Save button.

If you want to perform advance mathematical operations, you can check this as a reference: Form Calculation - Math Function Reference 

Here's an example form based on our steps above:  

The Form Calculation widget is not limited to the example I presented, it would depend on the requirement you need or how complex your formula is.

Questions? Please let us know below!


Eduard Bal (January 24, 2014 at 01:54 PM)

How can I get Always two numbers behind de decimal dot? I want for example have as solution of the sum 1.50 * 3 in a total box 4.50 or 1.50 * 2 = 3.00. I see in the total box just 4.5 or 3.
I hope you have a solution for me.

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pennistritter (January 31, 2014 at 05:29 PM)

I am not getting a total unless all fields have a value. What if one field is left blank? How do I get the total to show then?

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davidburt (February 03, 2014 at 11:18 AM)

I want to create a survey form which will have a final score based on the answers. Can you set a value for each question and then display the total?

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ParkingRetkinia (February 09, 2014 at 11:02 AM)

Is it posible to use logical content of calculation like:


If the answer is YES how to write it ?

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broytm (February 11, 2014 at 02:48 PM)

Is it possible to display the total word count in the form.. not just for the individual boxes?

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oranges (February 21, 2014 at 11:32 PM)

How do i associate a number value with a text option as was done in the example.

It appears that the radio buttons and drop down option have a number associated with them although they are text.

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supportadv (February 24, 2014 at 05:49 AM)

Hi, the "Calculate field" option is not happearing on radio button field in my form.
Is it a premium feature? Or is there some other reason?

from the guide:

"Note that the calculation function would only work with the following fields with Numeric entries/options:

1. Radio Button"

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MarkPutt (March 03, 2014 at 04:41 PM)

This doesn't work at all really. It only sees 4 fields that I absolutely don't need to calculate.

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afla21 (March 12, 2014 at 06:16 PM)

How do I get the calculator to ignore unwanted text content?
This is a new problem we just encountered today; the form was working just fine previously.
My form has a radio button that says
"Pre-registration $50". It's taking the hyphen as "negative," and adding -50 to the total field. Also I have drop down menus in the form of 1($12), 2($24), etc. It's taking the value to be $112, $224, etc., screwing up the calculation.
I guess I can change the format so that the relevant field contains just the values we want calculated, but I wonder if there is an alternative solution to this, since it did work before?

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demnos (May 01, 2014 at 09:34 PM)

Can I calculate the number of days between two dates (example: Today minus a date from my form)?

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Demond Spraberry (May 07, 2014 at 12:10 PM)

How can I calculate a form with 6 questions and each question has a different value using a check box?

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simonebrennan (May 27, 2014 at 01:39 AM)

Can an 'average' function be added?
I can't simply add the values and divide, since options are 1, 2, 3, 4, 5, N/A. Currently a score of N/A affects the calculation (taking it as zero), when I want it to be ignored.

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thescenedramaworks (August 10, 2014 at 02:49 PM)

How can I get the "other" field in the Radio Buttons options to be a numeric field?

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Joanna (October 08, 2014 at 05:46 PM)

I'm adding up fields in the form to calculate the total amount. The math works great but I would like to see a dollar sign in front of the result. $50, instead of 50. The calculation widget does not let me add any extra characters. Any ideas???

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seajj2 (March 26, 2015 at 08:37 AM)

I am trying to plug in this formula (quantity x 10 + 6). The formula works but in the calculation it automatically has the 6 in the total. I do not want it to show anything until they put in the quantity. How do I perform this?

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WOT (April 02, 2015 at 11:52 AM)

I cannot get this calculation tool to work.
1. The fields I need to add are text boxes labeled "Points max20" and so on. The fields I am offered in the calculation wizard are labeled something different.
2. I've inserted the fields, + sign as shown in the example, but the values are not calculating.

Am I missing something? Please help!

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escarecard (May 14, 2015 at 04:10 AM)

I'm trying to calculate a series of inputs with predefined inputs of 0-12. When calculating, the form seems to see 0 as 1, 1 as 2 even though the calculation values are set as 0-12.

Is the form calculation unable to recognise a zero value?


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Andre (May 16, 2015 at 08:05 PM)

é possivel calcular valores dos inputs dentro da Matriz criada?

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astankiewicz (June 11, 2015 at 09:08 AM)

So this functions is only for the form itself and can not be done on the dashboard at all - correct?

My purpose here is this: to make it so 5 viewers of the form results can rate the response from the form on the dashboard.

My Solution using these tools: Each Response is viewed and rated by each judge - the calculation field is recalculated each time and the form is submitted by each judge with each new calculation.

End result each response has a a calculated rating on the dashboard.

Will this work?


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cpachiasso (July 01, 2015 at 04:51 PM)

To me dropdown menu do not works for calculations

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strugar (August 27, 2015 at 03:04 PM)

Hi. Is there a plan to add function to calculate Poisson distribution? Similar to Excel function POISSON()? Thanks!

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AlanMnk (September 13, 2015 at 03:39 PM)

How does it work with dropdown menus???

How to attribute a number to dropdown options?

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Nic Crocker (December 09, 2015 at 04:16 PM)

I want to create a form which has 30 questions, each providing 3 potential responses phrased as a statement. I want to calculate how many answer As,answer Bs and answer Cs are selected. Is this possible?

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zappaaviaries (December 11, 2015 at 05:04 AM)

How do I use this for simple inventory tracking. I have an order form and it calculates the order total, but would like this...
I would like to have a beginning in stock number and as the products are ordered, have the available quantity reduced by that number.

How could I do that? Or can I do it even?

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buzz vaughn (January 07, 2016 at 09:47 AM)

how do i add $ and % to the answer calculated

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FransJanssen (February 19, 2016 at 02:43 AM)


Using a configurable list with dropdown, I would like a calculation for each row an user fills in.

The text in the configurable list is:
Broodje : dropdown : Zacht wit broodje, Zacht bruin broodje, Hard wit broodje (€ 0.30), Hard bruin broodje (€ 0.30), Croissant wit (€ 0.55), Croissant bruin (€ 0.55) : Maak uw keuze
Beleg : dropdown : Jong belegen kaas (€ 2.35), Oude Kaas (€ 2.65), Achterham (€ 2.65), Salami (€ 2.65), Ossenworst (€ 2.65), Filet Amercan (€ 2.65), Rosbief (€ 2.80), Roombrie (€ 2.80), Gezond (€ 2.80), Huzarensalade (€ 2.35), Eisalade (€ 2.78) : Maak uw keuze
Aantal : number : aantal

How to perform?

Sincerely, Frans.

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polishedcarz (March 11, 2016 at 07:43 PM)

I'm creating a Request a Quote for a Car Service.

Can I use the Driving Distance Calculator in order to calculate the results in mileage x $0.90/mile to equal a quote. Is this possible?

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agendia1 (April 02, 2016 at 09:23 PM)

Your forms service is superb. I just keep discovering every imagination and thought.

MGGKC (April 22, 2016 at 01:04 PM)

I would like to perform a conditional calculation. The result will then be added into a grand total using the calculation widget. How do I get the conditional calculation into a field that can be used later?

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hmcdowell (April 25, 2016 at 05:19 AM)

Hello, I am trying to add Calculation field and its not working out like it should. When I click on the check box of the item that I would like to calculate, it does not input the correct amount. For example if the amount is listed as $30, in the calculation field is says my total is 300000000000.00. Not sure how to current this. You should be able to view the form here,

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globalweb (July 03, 2016 at 10:28 PM)

How can I get the calculator widget to ignore certain part of a dropdown value?

For example here are the values we plan to have:
$49 - 10 Leads
$99 - 25 Leads

It needs to use the dollar value for calculation, but ignore the total lead #.

Thank you.

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elaren (October 05, 2016 at 12:53 AM)

I cannot for the life of me figure out how to calculate the days between 2 dates.
It would be awesome if someone could put the formula/calculation needed to do this.

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supremeprincesspageants (October 15, 2016 at 06:45 PM)

On the new version of the Calculation Widget how do you make the result field read-only?

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JPantoine (October 24, 2016 at 10:10 AM)

I am a new user. I do not find the "advances options" in the calculation widget. How couls I do? Thanks in advance.

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JCP_Art (January 24, 2017 at 02:20 PM)

Is it a way to add sales tax to a product?

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DefenderAmmo (January 24, 2017 at 08:02 PM)

It seems like the calculations work sometimes. I have a string of calculations that I'd like to go into the "total cost" box. It seems like some add together for the total cost and some values just replace whatever is in there. Can someone help?

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SFDAdmissions (February 28, 2017 at 12:02 PM)

I'm attempting to simply 1/2 a total if a preceding field is marked 'yes'.
Summer camp registration and we are giving a 50% to faculty members. I am using the form calculation wizard and have all the fields being added (field 1+field 2+field 3)*.5 is how I have it currently and it is simply returning the total with out the multiplier.

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tiablisstbc (March 23, 2017 at 05:56 AM)

I'm trying to do this equation and it won't give me a final total... help please!

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iondjp (April 21, 2017 at 11:28 AM)

I have used both methods of doing calculation (i.e. Conditional Logic or Form Calculation widget). Is there a benefit or drawback to one over the other? Is there any discernible efficiency as far as speed or managing the code?

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solidhand (May 02, 2017 at 04:22 PM)

why cam my customers write down a calculation of their own in the calculation box?!?
What is the reason for this sh...t?!?!

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olovesz (May 10, 2017 at 03:08 PM)

How do I calculate multiple fields in which some of them need to be multiplied.
For instance Product x quanity, + Product x quanity, + Product x Quanity, equals

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MandirDallas (May 18, 2017 at 08:21 PM)

My calculation works on the form but when submitted and email, the calculated value does not show in the email. Is there a fix for this?

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fiesensi (June 18, 2017 at 02:05 PM)

How can I use "Count Rows" for a "Infinite List"?

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asesoresdi2 (June 19, 2017 at 07:37 PM)

ey people how can do calculation of 0.00003511 and get 10%, the problem is jotform don't show number less that 0

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deweese (June 29, 2017 at 10:58 AM)

How can you get the decimal correct for result from two times? For example, total hours/mins from a start and end time.

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thomasmccullagh (July 10, 2017 at 09:53 PM)

If I am using the form calculation widget, alongside the matrix dynamique how do I make sure it only calculates one column of the matrix.

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ameliabuttress (July 11, 2017 at 11:40 AM)

Hi there! I have created a form with 24 questions. Each is answered with a radio button rating the answer from strongly disagree to strongly agree. I'd like to make it so that there is a different display depending on what answer is input - if someone agrees or strongly agrees with one of the items, I'd like to recommend they look at different material. I added values to the matrix but when I added the calculation field, it seems to add a bunch of zeros to the total. Including a link to the form for review:

How do I get rid of these extra zeros?

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tipi (July 17, 2017 at 02:49 AM)

The checkbox show empty decimal from the option menu has no effect on the calculated value. Also the option swap dot for a comma has no effect, it will always show a dot as a separator. For accounting calculations it is important to show the empty values such as 457,00 € and also here in europe it would be nice to have the comma instead of a dot. any idea why both checkboxes have no effect?

thanks in advance

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Whudafuq (August 05, 2017 at 07:30 PM)

I'm sure I'm missing it somewhere, but what is the best method to store and/or submit results via email?

Thanks in advanced

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espleyk (August 08, 2017 at 07:53 AM)

I am completely bewildered. For each question in my quiz there is a yes or no answer and depending on each question I have put in a score of 0 or 1.
I have added the form calculation wizard and added a calculation for each question, but I don't think that's right! But I still can't get it to add it all up. I want to do a conditional logic for the thank you page which gives them a response that depends on the total scored. But when I go to the conditions menu to add conditional logic on the thank you page - I don't have a line that says - Total sum like you have in your example. How do I get a total score at the end in order to then be able to add this conditional logic. Thank you

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