Is it possible to perform calculation in a matrix dynamic

Trying to calculate a total inside a matrix dynamique. Basically need quantity and cost to give me a total.

Unfortunately it is not possible to use calculation inside the Matrix Dynamic, but it is possible to make calculation in the matrix field, by adding a condition to update a form field:

You can select the matrix and the option is filled > add field:

You can select the option show headers in order to be easier to select the right fields:

Now you need to select the output (the total cell):

You need to repeat this process for each line where you want to have calculation.

The downside is that the user cannot add more rows.

In order to use the calculation inside the matrix you need to access the old wizard by accessing this url:

https://www.jotform.com/?old 

You can test the demo form:

https://form.jotform.com/61426449535965? 

Let us know if we can assist you further.