* **Decimal** is a base 10 numbering system.
* **Binary** is a base 2 numbering system.
* **Hexadecimal** (commonly known​ as Hex) is a base 16 numbering system.

Below is the conversion table for their first 16 values:

|   Decimal  |  Binary   |   Hexadecimal  |
| --- | --- | --- |
| 0    |  0000   |    0 |
|  1   |  0001   |  1   |
|  2   | 0010    |  2   |
|  3   | 0011    |  3   |
|  4   |   0100  |  4   |
|  5   |  0101   |  5   |
|   6  |  0110   |   6  |
|   7  |  0111   |   7  |
|  8   |  1000   | 8    |
|  9   |  1001  |   9  |
| 10    |   1010  |  A   |
|  11   |1011     |  B   |
|  12   |   1100  |  C   |
| 13    | 1101    |  D   |
|  14   |  1110   |  E   |
|   15  |  1111   |   F  |

Decimal	Binary	Hexadecimal
0	0000	0
1	0001	1
2	0010	2
3	0011	3
4	0100	4
5	0101	5
6	0110	6
7	0111	7
8	1000	8
9	1001	9
10	1010	A
11	1011	B
12	1100	C
13	1101	D
14	1110	E
15	1111	F

Decimal, Binary, and Hex conversion table