# Binary to Decimal Conversion – Basics of IP

In this article we will discuss Binary to Decimal Conversion – Basics of IP, will make brief discussion on Binary to Decimal Conversion. In last article we discuss about IPv4 Addresses – Detail of IPv4.

## Binary to Decimal Conversion

An easy method of **converting decimal** to **binary **number equivalents is to write down the **decimal** number and to continually divide-by-2 (two) to give a result and a remainder of either a “1” or a “0” until the final result equals zero. So for example. **Convert** the **decimal **number 294_{10} into its **binary** number equivalent. To convert a binary IPv4 address to its dotted decimal equivalent, divide the IPv4 address into four 8-bit octets. Next apply the binary positional value to the first octet binary number and calculate accordingly.

**Binary** coded **decimal** (BCD) is a system of writing numerals that assigns a four-digit **binary** code to each digit 0 through 9 in a **decimal** (base-10) numeral. The four-bit BCD code for any particular single base-10 digit is its representation in **binary** notation, as follows: 0 = 0000. 1 = 0001. 2 = 0010.

For example, consider that 11000000.10101000.00001011.00001010 is the binary IPv4 address of a host. To convert the binary address to decimal, start with the first octet. This is the main **difference between Binary** number and **binary** coded decimal. For 0 to 9 decimal numbers both **binary** and **BCD** is equal but when decimal number is more than one bit **BCD** differs from **binary**.