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build.infra-ec2-cost Calculator
Estimates monthly AWS EC2 cost for a given instance type and count under on-demand vs. reserved vs. spot pricing, showing savings from commitment. Reserved instances offer 30–60% savings over on-demand for predictable workloads — the 1-year break-even is typically 7–9 months.
Inputs
On Demand Hr
Reference formula or conversion factor shown for context.
Reserved Hr
Reference formula or conversion factor shown for context.
Hours
Reference formula or conversion factor shown for context.
Results
on-demand/mo
Estimated monthly cost at on-demand (pay-as-you-go) pricing — no commitment required but higher per-unit cost.
reserved/mo
Estimated monthly cost under a reserved instance commitment — lower unit cost in exchange for a 1- or 3-year commitment.
monthly savings
Total money or resources saved compared to the baseline or alternative scenario.
savings %
Total money or resources saved compared to the baseline or alternative scenario.