Ethernet Frame Decoder

Paste a raw Ethernet frame in hex and decode destination/source MACs, EtherType, and payload size.

Ethernet frame hex (≥ 14 bytes)

Destination MACFF:FF:FF:FF:FF:FF

Source MAC00:1B:44:11:3A:B7

EtherType0x0800 (IPv4)

Payload size0 bytes

How to read the result

Bytes 0–5 are the destination MAC, 6–11 the source MAC, 12–13 the EtherType (0x0800 = IPv4, 0x0806 = ARP, 0x86DD = IPv6). Anything after byte 14 is payload.

Example

ffffffffffff001b44113ab70800 → broadcast, EtherType IPv4

FAQ

How many bytes minimum?

14 bytes (28 hex chars): 6 dst MAC + 6 src MAC + 2 EtherType.

What is EtherType 0x8100?

An 802.1Q VLAN tag — 4 extra bytes precede the real EtherType.