This is useful for storing passwords in a database though still vulnerable to md5 dictionary attacks, anyway, here’s a static method. public static String hash(String text) { String hashedString = ""; try { MessageDigest md5Hash = MessageDigest.getInstance("MD5"); md5Hash.update(text.getBytes(), 0, text.length()); hashedString = new BigInteger(1, md5Hash.digest()).toString(16); } catch (NoSuchAlgorithmException exception) { exception.printStackTrace(); } return hashedString; } This will return the MD5 hash. Have a great day!