Infra Atlas · Calculators

Right-Sizing.

Paying for headroom you never use? Enter the instance and what it actually runs at — the calculator works out the capacity you need (with safety headroom), then finds the cheapest instances that still fit it: on the same cloud, and on every other one. Built on the live catalogues behind the Equivalent-SKU Finder.

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Cheaper on the same cloud
Cheapest fit on every other cloud
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Utilisation-based downsizing is a heuristic, not a guarantee. Average CPU hides burst patterns; memory pressure, IOPS, network ceilings, licensing and architecture differences don't show in these two numbers at all. Candidates keep your current CPU architecture and workload class to stay bootable and comparable, and the need is computed as current × utilisation × (1 + headroom), rounded up. Savings are hourly on-demand list prices × 730 h — same caveats as the TCO comparator: no spot/reserved/committed rates, no regional uplifts, EUR never compared to USD. Benchmark before you resize.