Binary to Decimal
Bin ↔ dec
Enter Binary Number
Quick Examples
Binary Number System
Binary is a base-2 number system that uses only two digits: 0 and 1.
Common Conversions:
0000 = 0
1000 = 8
0001 = 1
1001 = 9
0010 = 2
1010 = 10
0011 = 3
1011 = 11
0100 = 4
1100 = 12
0101 = 5
1101 = 13
0110 = 6
1110 = 14
0111 = 7
1111 = 15
Position Values:
2³ 2² 2¹ 2⁰
8 4 2 1
How to convert:
Binary to Decimal: Multiply each digit by its position value (2ⁿ) and sum.
1010 = 1×8 + 0×4 + 1×2 + 0×1 = 10
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