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Convert 285 from decimal to hexadecimal

(base 16) notation:

Power Test

Raise our base of 16 to a power

Start at 0 and increasing by 1 until it is >= 285

160 = 1

161 = 16

162 = 256

163 = 4096 <--- Stop: This is greater than 285

Since 4096 is greater than 285, we use 1 power less as our starting point which equals 2

Build hexadecimal notation

Work backwards from a power of 2

We start with a total sum of 0:


162 = 256

The highest coefficient less than 15 we can multiply this by to stay under 285 is 1

Multiplying this coefficient by our original value, we get: 1 * 256 = 256

Add our new value to our running total, we get:
0 + 256 = 256

This is <= 285, so we assign our outside coefficient of 1 for this digit.

Our new sum becomes 256

Our hexadecimal notation is now equal to 1


161 = 16

The highest coefficient less than 15 we can multiply this by to stay under 285 is 1

Multiplying this coefficient by our original value, we get: 1 * 16 = 16

Add our new value to our running total, we get:
256 + 16 = 272

This is <= 285, so we assign our outside coefficient of 1 for this digit.

Our new sum becomes 272

Our hexadecimal notation is now equal to 11


160 = 1

The highest coefficient less than 15 we can multiply this by to stay under 285 is 13

Multiplying this coefficient by our original value, we get: 13 * 1 = 13

Add our new value to our running total, we get:
272 + 13 = 285

Hexadecimal (10 - 15) are represented by an (A-F) where 13 translates to the letter D

This = 285, so we assign our outside coefficient of D for this digit.

Our new sum becomes 285

Our hexadecimal notation is now equal to 11D


Final Answer


We are done. 285 converted from decimal to hexadecimal notation equals 11D16.