Convert string from lowercase to uppercase in R programming – toupper() function Last Updated : 10 May, 2020 Improve Improve Like Article Like Save Share Report 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: # R program to convert string # from lowercase to uppercase # Given String gfg <- "Geeks For Geeks" # Using toupper() method answer <- toupper(gfg) print(answer) Output: [1] "GEEKS FOR GEEKS" Example 2: # R program to convert string # from lowercase to uppercase # Given String gfg <- "The quick brown fox jumps over the lazy dog" # Using toupper() method answer <- toupper(gfg) print(answer) Output: [1] "THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG" Like Article Suggest improvement Previous Managing Secrets and Auth Details in R Language Next Convert String from Uppercase to Lowercase in R programming - tolower() method Share your thoughts in the comments Add Your Comment Please Login to comment...