FREE · NETWORK & IT INFRASTRUCTURE
Network Cable Calculator.
Estimate Ethernet cable boxes, total length, jacks, patch panels and patch cords for a structured cabling job, with length checks.
- Total cable
- 2,402 m
- Average run with slack
- 45.5 m
- Runs per box (longest run)
- 4
- Outlets / keystone jacks
- 48
- Patch panels
- 2
- Patch cords (desk + rack)
- 96
- Category capability
- 10GBASE-T to 100 m
- Boxes are counted so that no run is spliced: leftover lengths shorter than a run are waste.
- Fire-safety ratings (CMP/plenum, CMR/riser, LSZH, Euroclass CPR) depend on where cable is installed and local rules.
How to use Network Cable Calculator
Enter the number of runs, shortest and longest run, slack, waste, category, unit and patch panel size.
How it works
Boxes are the larger of total length ÷ box length and runs ÷ runs per box, so no run is spliced. Runs above the 90 m permanent link (24 m for Cat 8) are flagged.
Example
48 Cat 6A runs of 15–70 m with 3 m slack need 8 boxes of 305 m, 2 patch panels and 96 patch cords.
Questions about Network Cable Calculator
Is Network Cable Calculator free, and do I need an account?
Yes. This tool is free to use in your browser without an account. Processing takes place on your device.
What are the limits and what should I check?
Average-based estimate; measure runs on drawings for a bill of materials. Fire-rating and local rules are not checked. Everything is calculated in your browser; nothing is sent or probed on the network. Review the result before using it in your work.
Is my input sent to a server?
Your input is processed in your browser and is not uploaded by this tool. Files and pasted text are cleared when the page is refreshed. Normal website requests are still required to load the page and its libraries. Read the privacy explanation.