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BIN to DEC Converter Online

Converting binary numbers to decimal helps understand bit flag values, file permissions, and results of bitwise operations.

number-base
BIN → DEC
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10

Decimal (DEC)

Convert from/to decimal number system

01

Binary (BIN)

Convert from/to binary number system

0x

Hexadecimal (HEX)

Convert from/to hexadecimal number system

0o

Octal (OCT)

Convert from/to octal number system

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DEC to HEX Converter Online DEC to BIN Converter Online HEX to DEC Converter Online OCT to HEX Converter Online OCT to DEC Converter Online

Frequently Asked Questions

Each bit is multiplied by the corresponding power of 2, starting from the rightmost bit (2^0). The results are summed. For example, 1101 = 1*8 + 1*4 + 0*2 + 1*1 = 13.
A byte is 8 bits, with values from 00000000 to 11111111 (0-255 in DEC). A kilobyte = 1024 bytes, a megabyte = 1024 kilobytes.
In Unix systems, file permissions (chmod) use octal notation, but each digit is 3 bits: r=4(100), w=2(010), x=1(001). For example, 755 = rwxr-xr-x.