This EIGRP metric calculator computes the classic composite metric and the wide (64-bit) metric used in named mode, from the path’s slowest bandwidth, total delay and the K values. It runs entirely in your browser: nothing you type is sent to our server.
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Table of Contents
Classic metric
With default K values (K1 = K3 = 1, others 0): metric = 256 × (10,000,000 ÷ slowest bandwidth in kbps + total delay in µs ÷ 10). A T1 path with 20,000 µs of delay gives 256 × (6,476 + 2,000) = 2,169,856.
Wide metrics
Named-mode EIGRP scales throughput and latency by 65,536 so fast links stay distinguishable: a single GigabitEthernet hop gives a wide metric of 1,310,720 and a RIB metric of 10,240 (÷ 128, the default rib-scale).
K values
K values must match on every neighbour or adjacencies will not form. Leave them at the defaults unless you have a specific reason: load and reliability change constantly, and including them makes routes flap.
How we checked it
We checked the outputs on 11-12 October 2026 against the textbook T1 example (2,169,856) and a GigabitEthernet hop in wide metrics (1,310,720, RIB 10,240).
Frequently asked questions
How is the EIGRP metric calculated?
With default K values: 256 × (10^7 ÷ slowest bandwidth in kbps + total delay in tens of microseconds).
What are the default EIGRP K values?
K1 = 1, K2 = 0, K3 = 1, K4 = 0, K5 = 0: only bandwidth and delay are used.
Why use wide metrics?
Classic metrics cannot tell 10, 40 and 100 Gbps links apart because the bandwidth term becomes tiny. Wide metrics fix this.