Multiply each digit by a power of two and sum. Type into any of the binary, octal, decimal or hex fields and the rest update automatically.

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255. F equals 15, so 15x16 + 15 = 255.

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※ Type in any field and the rest convert automatically. Hex uses 0-9 and A-F.

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.

Base Converter (2/8/10/16)