Kubernetes Resources Calculator

Estimate Kubernetes replicas and CPU/memory requests from target RPS and per-pod capacity.

Workload assumptions

This calculator gives a rough starting point for Deployment replicas and pod resources. Use real load tests and SLOs to refine.

Target steady-state throughput (requests per second)Capacity per pod at acceptable latency (requests per second)CPU request per pod (millicores)Memory request per pod (MiB)Safety buffer (%)

Suggested Kubernetes spec

Replica count: 7 (rounded up with buffer applied)

Total CPU requests: 1400m

Total memory requests: 1792Mi

Deployment snippet

spec:
  replicas: 7
  template:
    spec:
      containers:
        - name: app
          resources:
            requests:
              cpu: "200m"
              memory: "256Mi"
            limits:
              cpu: "300m"
              memory: "384Mi"

Tune rps per pod and resource values based on load tests (p95/p99 latency) and your cluster node sizes. This tool is intentionally conservative and meant as a planning aid, not a guarantee.

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