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Base Converter

Binary Β· Octal Β· Decimal Β· Hexadecimal

Convert (type in any field)
β€» Type in any field and the rest convert automatically. Hex uses 0-9 and A-F.
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FAQ
What is hex FF in decimal?
255. F=15, so 15x16+15=255.
Binary to decimal?
Multiply each digit by a power of two and sum. The converter does it automatically.
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Base Converter (2/8/10/16)

Base conversion expresses the same number in different bases. Computers use binary (0/1); octal appears in file permissions (chmod 755); hexadecimal is used for color codes (#FF0000) and memory addresses. Type into one field to convert to the others instantly.

How to use

Enter a value in any of the binary, octal, decimal or hex fields. Invalid characters (like G in hex) are flagged. Bit length and the decimal value are shown below.

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