Convert string from lowercase to uppercase in R programming - toupper() function

Last Updated : 12 Jul, 2025

toupper() method in R programming is used to convert the lowercase string to uppercase string.

Syntax: toupper(s) Return: Returns the uppercase string.

Example 1: Output:

[1] "GEEKS FOR GEEKS"

Example 2: Output:

[1] "THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG"

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URL: https://www.geeksforgeeks.org/r-language/convert-string-from-lowercase-to-uppercase-in-r-programming-toupper-function/