VM Sizing Calculator
Estimate the ideal vCPUs, memory, and storage for virtual machines based on workload type, expected users, and cloud provider. Get instance recommendations for AWS, Azure, and GCP.
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Right-Size Your Cloud Virtual Machines
Our VM Sizing Calculator helps DevOps engineers and cloud architects determine optimal virtual machine specifications. Input your workload type and expected users to get tailored recommendations for AWS, Azure, or Google Cloud Platform instances.
Understanding VM Sizing
VM sizing involves calculating the compute resources (vCPUs, RAM, storage) needed to run your applications efficiently. Proper sizing prevents over-provisioning (wasting money) and under-provisioning (poor performance). The calculator considers workload characteristics, concurrent users, and peak traffic patterns.
Sizing Formula
vCPUs = ⌈(Base + Users × CPU/User) / Utilization Target⌉Why Calculate VM Sizing?
Optimize Cloud Costs
Avoid paying for resources you don't need by right-sizing from the start.
Ensure Performance
Guarantee smooth operation during peak traffic with proper resource allocation.
Plan for Growth
Account for traffic spikes and future scaling needs.
Compare Providers
Get instance recommendations across AWS, Azure, and GCP.
How to Use This Calculator
Frequently Asked Questions
The peak multiplier accounts for traffic spikes above normal usage. A value of 2x means you're sizing for double the average concurrent users. Typical values range from 1.5x (predictable traffic) to 5x (viral potential or seasonal spikes).