Convert to upper case in R dataframe column

To convert a column in R to upper case we use toupper() function. Let’s see how to convert to upper case in R dataframe with an example.

Let’s first create the dataframe.

df1 = data.frame(State = c('Arizona AZ','Georgia GG', 'Newyork NY','Indiana IN','Florida FL'), 
                 Score=c(62,47,55,74,31))
df1

So the dataframe will be

Convert to lower case in R dataframe column 1

 

Convert to upper case in R dataframe:

toupper() function is used to convert the column to upper case in R

df1$state_upper = toupper(df1$State)
df1

So the upper case converted column along with dataframe will be

Convert to upper case in R dataframe column 2

 

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