Kubernetes HPA Calculator

Current replicas and utilization, target utilization, and min/max bounds - runs the real HorizontalPodAutoscaler algorithm and outputs a valid autoscaling/v2 manifest.

Deployment name

Current replicas

Current CPU utilization %

Target CPU utilization %

Min replicas

Max replicas

Raw desired

Clamped to bounds

Bound hit

None

desiredReplicas = ceil(currentReplicas × currentUtilization ÷ targetUtilization), then clamped to [min, max] - the exact HPA controller algorithm.

apiVersion: autoscaling/v2
kind: HorizontalPodAutoscaler
metadata:
  name: my-app
spec:
  scaleTargetRef:
    apiVersion: apps/v1
    kind: Deployment
    name: my-app
  minReplicas: 2
  maxReplicas: 10
  metrics:
  - type: Resource
    resource:
      name: cpu
      target:
        type: Utilization
        averageUtilization: 60

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