Virtual Server Calculator (VM)

Virtual Server (VM) Calculator

Right-size your VM before you deploy — under-provisioning kills performance, over-provisioning wastes money every hour it runs.

Workload type

Concurrent users / sessions

15000

Storage needed

10GB5TB

Growth headroom

0%100%

Sizing Targets & Redundancy

These decide how much headroom is baked into the final spec.

Target CPU utilization at peak

50%90%

70% is the common rule of thumb — running hotter risks queuing under load.

Target memory utilization at peak

50%90%

High availability

Cloud provider for cost estimate

Your Recommended VM

Recommended spec

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Recommended instance family

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Instances needed (HA)

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Raw workload need (before headroom)

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Storage (all instances)

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Estimated monthly cost

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Why your spec is bigger than "raw" need

Raw workload need

Utilization headroom

Growth headroom

Estimated monthly cost by provider

Other providers

Your selection

Sizing Details

This calculator uses standard capacity-planning practice: size for peak concurrency at a target utilization (not 100%), add growth headroom, then round to common instance sizes. A vCPU is typically a hyperthread, not a full physical core. Actual pricing varies by region, commitment term, and reserved-instance discounts.