Ethernet Cable Calculator

Calculate total ethernet cable length for network runs.

Number of Cable Runs

Avg Run Distance (ft)

Slack Per Run (ft)

Formula

Total Cable = (Avg Distance + Slack) x Number of Runs

What is the max length for an ethernet run?

Cat5e and Cat6 support runs up to 328 feet or 100 meters.

How much slack should I leave?

Leave 6 to 10 feet of slack at each end for termination.