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MTU Calculator

Calculate optimal MTU size accounting for encapsulation overhead

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Base MTU (bytes)

Encapsulation / Tunneling (select all that apply)

None (Standard Ethernet)-0BPPPoE-8BGRE-24BGRE + IPsec (Transport)-62BGRE + IPsec (Tunnel)-82BIPsec (Transport, AES)-38BIPsec (Tunnel, AES)-58BVXLAN-50BWireGuard-60BOpenVPN (UDP)-28BOpenVPN (TCP)-40BIPv6-in-IPv4 (6to4)-20BMPLS (1 label)-4BMPLS (2 labels)-8B802.1Q VLAN Tag-4BQinQ (Double VLAN)-8B

Total Overhead

0 bytes

Effective MTU

1500 bytes

TCP MSS

1460 bytes

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