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How to convert String to Int in Kotlin?

In Kotlin, you can call function toInt() on your String instances:

Example of converting String to Int in Kotlin

fun main(args: Array<String>) {
    val str = "2022"
    try {
        val parsedInt = str.toInt()
        println("The parsed int is $parsedInt")
    } catch (nfe: NumberFormatException) {
        // not a valid int
    }
}

Output

The parsed int is 2022


Another example using toIntOrNull()

fun main(args: Array<String>) {
    val str = "2022"
    
    val parsedInt = str.toIntOrNull()
    if (parsedInt != null) {
        println("The parsed int is $parsedInt")
    } else {
        // not a valid int
    }
}

Output

The parsed int is 2022


Conclusion

In this page (written and validated by ) you learned about How to convert String to Int in Kotlin? . What's Next? If you are interested in completing Kotlin tutorial, we encourage you simply to start here: Kotlin Tutorial.



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