Byte Array In this post we will learn about basic concept of byte array and how to covert a string into byte array. Byte Byte is a unit of digital information that contain mostly eight bit. The bit is a unit of information which can be either 0 or 1. Byte contains eight bit so its value range is 0 to 2 8 -1 i.e. 0 to 255. Byte Array Byte array is the array of byte. Convert String into Byte Array Example: convert string s = "ByteArray" into byte array Step 1: Find ASCII value of each character in s and store in an array. ASCII(ByteArray) = [66, 121, 116, 101, 65, 114, 114, 97, 121] Byte array of s will be array of ASCII value. Please write comments if you find anything incorrect, or you want to share more information about the topic discussed above.