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Conversion TypeBinaryOctalHexadecimalBase
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Convert 11 from decimal to binary

(base 2) notation:

Power Test

Raise our base of 2 to a power

Start at 0 and increasing by 1 until it is >= 11

20 = 1

21 = 2

22 = 4

23 = 8

24 = 16 <--- Stop: This is greater than 11

Since 16 is greater than 11, we use 1 power less as our starting point which equals 3

Build binary notation

Work backwards from a power of 3

We start with a total sum of 0:


23 = 8

The highest coefficient less than 1 we can multiply this by to stay under 11 is 1

Multiplying this coefficient by our original value, we get: 1 * 8 = 8

Add our new value to our running total, we get:
0 + 8 = 8

This is <= 11, so we assign our outside coefficient of 1 for this digit.

Our new sum becomes 8

Our binary notation is now equal to 1


22 = 4

The highest coefficient less than 1 we can multiply this by to stay under 11 is 1

Multiplying this coefficient by our original value, we get: 1 * 4 = 4

Add our new value to our running total, we get:
8 + 4 = 12

This is > 11, so we assign a 0 for this digit.

Our total sum remains the same at 8

Our binary notation is now equal to 10


21 = 2

The highest coefficient less than 1 we can multiply this by to stay under 11 is 1

Multiplying this coefficient by our original value, we get: 1 * 2 = 2

Add our new value to our running total, we get:
8 + 2 = 10

This is <= 11, so we assign our outside coefficient of 1 for this digit.

Our new sum becomes 10

Our binary notation is now equal to 101


20 = 1

The highest coefficient less than 1 we can multiply this by to stay under 11 is 1

Multiplying this coefficient by our original value, we get: 1 * 1 = 1

Add our new value to our running total, we get:
10 + 1 = 11

This = 11, so we assign our outside coefficient of 1 for this digit.

Our new sum becomes 11

Our binary notation is now equal to 1011


Final Answer


We are done. 11 converted from decimal to binary notation equals 10112.