Instance Sizing Calculator
Get recommended vCPU, RAM, and instance type based on your peak CPU usage, memory needs, and storage requirements. Right-size your cloud instances.
How to Use the Instance Sizing Calculator
- Enter peak CPU utilization percentage.
- Enter peak RAM requirement in GB.
- Enter storage requirement in GB.
- Click Calculate to get recommended instance specifications.
Casi d'Uso
- •Right-sizing cloud instances to reduce costs.
- •Planning new application deployments.
- •Migrating on-premise workloads to the cloud.
- •Reviewing and optimizing existing cloud spend.
Formula
Recommended vCPU = ceil(peak CPU% / 25). Recommended RAM = peak RAM × 1.3 (30% headroom).
Domande Frequenti
What is right-sizing?
Right-sizing means selecting the smallest instance that meets performance requirements, avoiding over-provisioning.
Why add 30% RAM headroom?
Headroom prevents OOM kills under unexpected traffic spikes and leaves room for OS and monitoring agents.
How do I measure peak CPU?
Use monitoring tools (CloudWatch, Datadog) to capture 95th percentile CPU usage over representative traffic periods.