TCP Flag Decoder

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SanchitGurukul Networking Tools

TCP Flag Decoder

Decode decimal, hexadecimal, binary, or named TCP flags and build a flag value by selecting individual control bits.

Decode a flag value

Accepted formats: decimal, hexadecimal, binary, or flag names separated by spaces, commas, plus signs, or pipes.

Build a value

Decoded result

Decimal18
Hexadecimal0x12
Binary (9-bit)000010010
Active flags SYN, ACK

SYN-ACK: acknowledges a connection request and synchronizes sequence numbers.

FlagBitStatusMeaning

Common TCP flag combinations

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