Free tools

Calculators we use, free to use.

Planning math from the standards, with the methodology written out — because a number you can’t defend is just a guess. No login, no email gate.

Optical loss budget from TIA-568.3-D component allowances — fiber, connectors, splices, with margin guidance.

NEC Chapter 9 fill check for communications cable in EMT — cable area vs conduit capacity, with the 53/31/40 percent rules.

Work-area outlet, drop, and patch-panel planning counts from floor area — TIA planning rules of thumb, stated as such.

Stack equipment into rack units, apply growth space, and see how many racks the room actually needs.

Every tool is a planning aid, not engineering or a stamped design. When the project needs the real thing: that’s the practice.

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Need more than the math?

The calculators sketch the answer. The design defends it — sealed, standards-traced, and built to survive plan review.