# Implicit Type Conversion (ITC)

Implicit type conversion is the automatic conversion of a value from one data type to another. Langstack applications support Implicit type conversion, where a smaller data type may be converted to a larger data type. This means that if the user attempts to update a variable of a larger data type with a value of a smaller data type, this can be applied directly without the user needing to explicitly express the type to convert to. 

For example, to assign an Integer data type to a Numerical data type, see the action below. 

In this Action, the value of variable `int1` (data type Integer) is updated to variable `num1` (data type Numerical) without explicitly mentioning the conversion function.

<figure><img src="https://media.langstack.com/documentation/media/images/code/training_manual/chapter_2/ch2implicittypeconversion_img1.png" alt=""><figcaption></figcaption></figure>


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