Observed arrival · 2026-09-26
LoadCairn’s critical-facility calculators
A toolkit for estimating UPS runtime, cooling load, and rack power, with the calculation method presented alongside the result.
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$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Engineers, facility managers, technicians, MEP consultants, and students
- Worth noticing
- The calculation trace keeps inputs, formula and source, and assumptions visible; results are explicitly limited to planning estimates.
Field notes
The three listed workflows take different operating inputs: UPS load and battery-bank configuration; IT demand, lighting, people, and the building envelope; or rack density and PDU capacity. The page says individual unsaved use is free, while paid plans add saved projects, reports, exports, history, and team workspaces. It cautions that estimates are for planning and should not replace licensed engineering design or manufacturer data.
Observed signals
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Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
◎NicheUnusually specific use
ƒJavaScriptBrowser-side code central
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