Cloud Cost & FinOps

Rightsizing Savings Calculator

Rightsizing savings estimates in most cost dashboards are theoretical. They assume the full gap between allocated and used capacity can be removed, that every instance in the fleet is addressable, and that the savings land on the invoice in full. Five inputs above produce a realistic monthly and annual savings figure that accounts for the share of the fleet a rightsizing program can actually touch.

Calculations run locally in your browser

Tool

Current monthly compute spend ($)

Current average utilization (%)

Target utilization (%)

Addressable fleet share (%)

Realized fraction after friction (%)

About this tool

Rightsizing Savings Calculator

Estimate realistic monthly savings from a rightsizing program. Inputs: current spend, average utilization, target utilization, and addressable fleet share and the fraction realized after friction.

• Estimate realistic monthly and annual savings from a rightsizing program

• Discount theoretical savings for fleet coverage and implementation friction

• Compare current and target utilization before committing to a program

Next step

Continue with Utility Matrix tools for the next decision in this workflow.

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FAQ

What does this tool tell you?

Estimate realistic monthly savings from a rightsizing program. Inputs: current spend, average utilization, target utilization, and addressable fleet share and the fraction realized after friction.

What affects the result most?

Estimate realistic monthly savings from a rightsizing program. Inputs: current spend, average utilization, target utilization, and addressable fleet share.

How should I use the result?

The calculation is deterministic — the same inputs always produce the same output — so the most useful workflow is to vary one input at a time and see which factor moves the result most. That tells you where to focus your attention before committing to a decision.

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