How to Perform Form Calculation in the Matrix Field?

Last Update: April 9, 2017

It is now possible to use the Matrix field to perform form calculation.

Here in our example, we will set the matrix field similar to a survey questionnaire with ratings or value on them, we will calculate the total rating using the Form Calculation widget. You can follow the steps below on how to do that.


In Version 4.0, we call the Matrix Table from Version 3.0, Input Table. It can be found in the Quick Elements section of the Basic tab when you add Form Elements to the form.

Once you've added the Input Tableselect an input type from its properties (cogwheel icon). From the same Fields tab of the Input Table properties, you will be able to set row and column headers.

After constructing the table, you now need to set calculation values for each of its cell (matrix sub-field). To do that, go to the Options tab and enter the values in the provided text area for calculation values following this simple rule, "Separate each column with a comma and each row with a new line."

In the example above, 4 Rows means 4 lines and 4 columns means 4 values separated by a comma.

Note: Choosing a different input type for the table, like a text box or number text box, if you want your respondents to define values for each cell, will not require you to set calculation values.

To get the total value of the selected cell(s) on the table, you will use the Form Calculation widget from the Widgets tab when you add Form Elements to the form.

To perform the calculation, you need to add the input table to the calculation area of the Form Calculation widget.

Clicking the "Add Field" button shown in the screenshot above lets you add fields to the computation.

Adding an Input Table field will let you select which row (radio button) or cell (checkbox field) in the table is to be included in the computation. (This is also referred as matrix sub-fields.)

After selecting the matrix sub-field(s) and clicking Done, you will see the selected sub-fields of the input table in the calculation area of the Form Calculation widget. From there, you will be able to create your own formula to get a total value. The calculation pad on the right will surely help you with the simple to complex mathematical tasks.

Sample Form that you can also clone to your account for testing:

Other references that might be helpful:

Form Calculation - Math Function Reference

How to Perform Form Calculation Using a Widget


How to Set Calculation Values For Checkbox and Radio Input Type

If you want user defined values, you can use textbox input type and skip to step 4.

1. Add the matrix field by dragging it in your form. 

2. Open the matrix field properties, go to Options tab then enter the calculation values like the following.

3. To get the total, add a Form Calculation widget in your form

4. In the “Calculation window”, click the “Add Field” button to add the fields you want to fetch the value from, in this case it’s the Matrix field.

5. Choose the Matrix Field based from the label you used.

6. Choose what rows you want to fetch the values.

7. You can then use different math functions or values to perform your calculation. In my case, I want to add all the selected radio buttons to have the total score of the survey questionnaire.


You can check the sample form here:


Do you have questions about this guide? Please let us know in the comment box below or post it to support forum.


events296 (June 29, 2015 at 10:51 AM)

I have tried to output the sum of a matrix's fields multiple times. Every time I save the logic the fields are removed and all I am left with in my equations is the addition signs.

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Communicaid (March 04, 2016 at 06:14 AM)

I've created a matrix question with dropdown list "yes" and "no" and I wwould like to add the values to the "yes"=1 and "no"=0.
my question is: can I use the same role live above : yes1?
what is the css code to hide the numbers?
Thank you in advance for your help

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Communicaid (March 04, 2016 at 10:52 AM)

ok, thank you for your help

IDOEWebmaster (June 22, 2016 at 10:54 AM)

How do I multiply the value of column 1 and column 2 and show the result value in the column 3 of the matrix table?

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jannyfer.chua (August 05, 2016 at 04:22 AM)


I have a set of 28 questions and 5 radio columns (Never, Rarely, Sometimes, Very often, Always).

a) How do I set values for each column and when they are selected, the values are added up? e.g. Never=1, Rarely=2, Sometimes=3, Veryoften=4, Always=5 
if Never is selectedx2, rarely x1, always x2 = the total is 14.

b) How do I set the 28 questions to calculate 4 different totals from the above columns. eg. Qs 1-7, 8-14, 15-21, 22-28 and then set a formula to only show the results for the highest total?

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aysaquing (August 15, 2016 at 04:48 AM)

Can I set condition on form matrix calculation? For example if column 5 as remarks says Best, the calculator will just compute all fields (rows) with best. Is that possible? Thanks.

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poudreriver (December 16, 2016 at 12:50 PM)

I am trying to count how many checkboxes are checked in a matrix.

It is the attendance sheet here:

I am trying to figure out how I can set the value of each checkbox to 1. I know that I can insert 1, but I don't want that to show in the headers. If I hide the headers, then the months can't show. I need to be able to show the months across the top. Do you have any suggestions for how I an do this?


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ZacharyRichards (January 26, 2017 at 08:35 PM)

I wanted to know if it were possible to create a calculation in the actual matrix.
For example, a cell in the matrix equals a date that someone put in above the matrix.
Is this possible

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AlfaIndoJaktim (February 27, 2017 at 11:21 PM)

if i set input type to numeric text box, can i get the result from the form calculation?
for example if i set the calculation value (200), and then i fill the field on matrix calculation (2), the result will be 400.
Can anyone help me to build that form?
thanks so much....

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lansingparty (February 28, 2017 at 03:13 AM)

I am hoping to get some help here because I am sure this is possible and I am simply missing how to do this. This is a limo company with a few variables. Lets make it simple and say we have limoA, limoB, and limoC. Each of these limos have an hourly rate for Weekday, Friday, Saturday. How would I set this up so the customer could fill out the form select the day of the week, use a check box form to select what they want quotes on, then depending on the hours selected multiply the value by the hours?

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KPWM (March 21, 2017 at 01:52 PM)

I want to assign values to each question in my matrix, but I don't want the person filling out the form to see the value. I only want to be able to see it. Is this possible?

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