Binary to Decimal Converter
Convert binary numbers to decimal.
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Convert binary to decimal
Enter a binary number made of 0s and 1s to read its everyday decimal value, and the conversion also runs in reverse. Binary is base 2, where each position is a power of two, which is how computers store every number internally. The tool checks that what you type is valid binary before converting.
How it reads
The binary 1010 is 8 plus 2, which equals 10 in decimal.
Frequently asked questions
What digits can binary use?
Only 0 and 1. Each place value is a power of two, doubling from right to left as 1, 2, 4, 8 and so on.
What is 1111 in decimal?
The binary 1111 equals 8 plus 4 plus 2 plus 1, which is 15 in decimal.