10 in Binary = 2 in Decimal

10 in binary is 2 in decimal, II in Roman numerals, 2 in hexadecimal and 2 in octal.

From To 2

10 binary = 2 decimal

10 in every number system

System	Written as
Decimal (base 10)	`2`
Roman numerals	`II`
Hexadecimal (base 16)	`2`
Octal (base 8)	`2`
Duodecimal (base 12)	`2`
Ternary (base 3)	`2`
Base 36	`2`
Vigesimal (base 20)	`2`
Quaternary (base 4)	`2`
Quinary (base 5)	`2`
Senary (base 6)	`2`

How to read 10 in binary

Binary to decimal

Multiply each digit by 2 to the power of its position (0 on the right), then add:

Digit	Place value	Digit × place
`1`	2¹ = 2	2
`0`	2⁰ = 1	0

2 + 0 = 2

About the number 2

2 is an even number.
2 is a prime number.
2 is a power of two: 2¹.
Written in binary it needs 2 bits, so it fits in one byte.

Nearby numbers in binary