Base64 encoded data maximum size

Question

I have a security mechanism that implements symmetric algorithm RijndaelManaged. I managed to find information what is the maximum size of encrypted data using

Answer 1

In Java:

byte[] bytes = new byte[128];
int base64Length = bytes.length / 3 * 4; // Strictly integer division
if (bytes.length % 3 != 0)
{
    base64Length += 4; // Extra padding characters will be added
}
System.out.println(bytes.length + " bytes will be encoded in " + base64Length + " characters.");

So, where the input bytes.length == 128, the output will be base64Length == 172 characters.