Binary to decimal converter

Binary to decimal number conversion calculator and how to convert.

Binary to decimal converter

Enter a binary number and press Convert button:

Enter binary number:  
2
     
   
     
Decimal result:  
10

Decimal to Binary converter ►

How to convert binary to decimal

The decimal number is equal to the sum of powers of 2 of the binary number's '1' digits place:

binary number: 1 1 1 0 0 1
power of 2: 25 24 23 22 21 20

1110012 = 125+124+123+022+021+120 = 57

Binary to decimal conversion table

Binary

base 2

Decimal

base 10

0 0
1 1
10 2
11 3
100 4
101 5
110 6
111 7
1000 8
1001 9
1010 10
1011 11
1100 12
1101 13
1110 14
1111 15
10000 16
100000 32
1000000 64
10000000 128
100000000 256

 


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