Kubernetes Cluster Sizing Guide — Node Count & Resource Calculator

Free Kubernetes cluster sizing calculator. Get node count, instance type, and autoscaling recommendations based on your workload.

Get node count, instance type, and autoscaling recommendations based on your workload profile. Adjust the inputs to match your expected load.

Workload Profile

<div class="sz-section">
  <h3>Cluster Settings</h3>
  <div class="sz-field">
    <label for="utilTarget">Target Node CPU Utilization</label>
    <select id="utilTarget" onchange="calcSizing()">
      <option value="0.5">50% — Conservative (safe headroom)</option>
      <option value="0.65" selected>65% — Standard (balanced)</option>
      <option value="0.8">80% — Optimized (cost-focused)</option>
    </select>
  </div>
  <div class="sz-field">
    <label for="workloadType">Workload Type</label>
    <select id="workloadType" onchange="calcSizing()">
      <option value="web">Web / API (bursty, HPA-friendly)</option>
      <option value="batch">Batch / ML (sustained, GPU-optional)</option>
      <option value="mixed" selected>Mixed</option>
    </select>
  </div>
  <div class="sz-field">
    <label for="haMode">High Availability (Multi-Zone)</label>
    <select id="haMode" onchange="calcSizing()">
      <option value="yes" selected>Yes — 3+ nodes per zone</option>
      <option value="no">No — Single zone</option>
    </select>
  </div>
</div>
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Recommended Nodes
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Instance Type
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HPA Range (min/max)
<div class="sz-yaml">
  <p style="font-size:0.8rem; color:var(--text-secondary); margin:0 0 0.5rem;">Resource request template (adjust for your workload):</p>
  <pre><code id="yamlOutput"></code></pre>
</div>

<a href="https://kubernetes.ae" class="sz-cta">Get expert cluster sizing validation →</a>

This calculator uses simplified formulas. Production sizing should account for system daemon overhead (~10-15%), burst headroom, and stateful workload requirements. Contact our engineers for precise recommendations.

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