Base64 FAQ

Usage from Address Bar

Access this page directly from your browser's address bar. Enter the string you want to encode/decode using the following schema: https://md5calc.com/base64/<TYPE:enc|dec>/<PHRASE> For example, to visit the page with the encoded string "hello world", simply go to: https://md5calc.com/base64/enc/hello+world Another cool feature is that you can specify "json" or "plain" mode in the URL to get only the encoded/decoded string in the response.
Schema of this feature: https://md5calc.com/base64/<TYPE:enc|dec>.<OUTPUT:plain|json>/<PHRASE> Example: https://md5calc.com/base64/enc.plain/hello+world Will output: aGVsbG8gd29ybGQ=

Usage from Javascript

We have removed CORS restriction so you can access the base64 encode/decode functionality directly in your JavaScript applications via AJAX.

Example:

var toEncode = 'hello world';
var xhr = new XMLHttpRequest();
xhr.onreadystatechange = function () {
    if (xhr.readyState == 4 && xhr.status == 200) {
        console.log('Base64 of "'+toEncode+'" is "'+JSON.parse(xhr.response)+'"');
    };
};
xhr.open('GET', 'https://md5calc.com/base64/enc.json/'+encodeURIComponent(toEncode), true);
xhr.send();

Will output:


			Base64 of "hello world" is "aGVsbG8gd29ybGQ="

Note that this example is mainly for demonstration, as JavaScript has built-in functions atob() and btoa() that do the same.

Usage from PHP

You can access this function directly in your applications.

PHP Example:

<?php
    $str = 'hello world';
    $url ='https://md5calc.com/base64/enc.plain/'.urlencode($str);
    $base64 = file_get_contents($url);
    echo 'Base64 of "'.$str.'" is "'.$base64.'"';

Will output:


			Base64 of "hello world" is "aGVsbG8gd29ybGQ="

Note that this example is mainly for demonstration, as PHP has built-in functions base64_encode() and base64_decode() that do the same.

How to do the same in PHP

<?php
    $str = '¡Hola!';
    $base64EncodedStr = base64_encode($str);
    $base64DecodedStr = base64_decode($base64EncodedStr);
    echo '
    <pre>';
    echo $str.PHP_EOL
         .' &rarr; '.$base64EncodedStr.PHP_EOL
         .' &rarr; '.$base64DecodedStr.PHP_EOL
    ;
    echo '</pre>';

How to do the same in JavaScript

var str = 'https://localhost/?param1=¡Hola!&param2=¡Hola!';
var base64EncodedStr = btoa(str);
var base64DecodedStr = atob(base64EncodedStr);
console.log(str);
console.log('-> ' + base64EncodedStr);
console.log('-> ' + base64DecodedStr);