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Most online "calculators" hide their maths and inflate their numbers. Ours are the tools our own engineers use — transparent, conservative and traceable. Pick a tool below and run it live.
Every output expands to show the formula, each input and every assumption. No black box — you see exactly how the number was reached.
Default assumptions (grid carbon, PUE ranges, unit costs) are sourced, dated and editable — swap in your own figures and the result updates live.
From a first-pass MW estimate to a capex range you can put in a board pack — then jump straight to the suppliers who can deliver it.
The Lab · Interactive
Five transparent engineering tools — no black-box outputs. Click any tool to open its live calculator. Every result shows its method.
Here's a worked example from the AI Hall calculator — inputs, the maths, and the output you can cite.
Assumptions are editable and dated. Change the grid factor to your region and every downstream number updates — and the source note updates with it.
The calculator gives you the spec. The directory gives you the companies and products that can deliver it — verified, sourced and searchable by exactly the parameters you just calculated.
766 verified vendors and operators — filter by category, region, certifications and the capabilities your build needs.
Open the Companies archive →Switchgear, UPS, cooling, busbar and more — with specs, datasheets and downloads to match your sizing output.
Open the Products archive →We add tools and refresh cost/energy benchmarks continuously. Get them in your inbox at 07:00 — sourced and free.
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