Convert a String to Uppercase

Convert text to uppercase easily with this tool. You just need to enter the content and press the button, the system will convert your text to uppercase

Enter your text then convert to uppercase

The Convert String to Uppercase tool is a powerful and versatile web-based tool that can be used to quickly convert strings of text to uppercase. This tool is useful for a variety of applications, from improving the readability of text to making it easier to search for specific words or phrases.

The Convert String to Uppercase tool can be used to quickly make text easier to read. By converting all lowercase letters to uppercase, the text becomes more consistent and easier to read. This can be especially helpful when dealing with long documents or webpages with multiple paragraphs. Additionally, converting text to uppercase can make it easier to spot typos or other mistakes.

The Convert String to Uppercase tool can also be used to improve search results. By converting text to uppercase, it helps to ensure that all words or phrases will be found in a search. It also helps to eliminate potential errors caused by case sensitivity. For example, if a search is done for a phrase in lowercase, it may not return the desired results if the phrase is actually in uppercase.

Example code in PHP

$string = "hello world";
echo strtoupper($string);

Example code in Nodejs

let string = "hello world";
let upperString = string.toUpperCase();

Example code in Java

public class StringToUpper {
  public static void main(String[] args) {
    String str = "hello world";
    String upperString = str.toUpperCase();

Example code in C

#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>

int main(void) {
    char *str = "hello world";
    char *upperString = malloc(strlen(str) + 1);
    int i = 0;
    while (str[i]) {
        upperString[i] = toupper(str[i]);
    upperString[i] = '\0';
    printf("%s\n", upperString);
    return 0;

Example code in C++

#include <iostream>
#include <string>

int main() {
    std::string str = "hello world";
    std::string upperString = "";
    for (int i = 0; i < str.length(); i++) {
        upperString += toupper(str[i]);
    std::cout << upperString << std::endl;
    return 0;

Example code in Python

string = "hello world"
upperString = string.upper()

Example code in Flutter

String string = "hello world";
String upperString = string.toUpperCase();

Example code in Ruby

string = "hello world"
upper_string = string.upcase
puts upper_string