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calculating the sum of three fields

calculating the sum of three fields

Calculate the sum of three form fields dynamically.

Overview

The user needs to display the total of three numeric inputs in a fourth field without submitting the form.
Use a JavaScript function to perform the calculation in real-time as values are entered.

Answered
ChronoForms v8
PV PVMA 26 Nov, 2025

Hi Folks,

I'm trying to create a form in which the user will enter a number in three different fields, and then the sum of the three fields is shown in a fourth field. How to do this?

Thanks!

Max_admin Max_admin 27 Nov, 2025
Answer
1 Likes

Hi PVMA

Using a JavaScript function, or PHP if the page will be submitted before the calculation is done.

Max, ChronoForms developer
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PV PVMA 02 Dec, 2025

Do you have any examples in the FAQ?

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