Kubernetes Resource Request/Limit Calculator
Calculate total CPU/memory requests and limits across replicas from per-pod resource values.
Last reviewed by the Radiatus Cloud team
Output
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Total your CPU and memory across replicas
A Kubernetes deployment sets CPU and memory requests and limits per pod, but what the cluster actually needs is those figures multiplied by the replica count. This calculator totals the requests and limits across replicas from your per-pod values, so you can see the real footprint a deployment demands.
Why the total is what schedules and bills
The per-pod numbers are what you configure, but the sum across replicas is what the scheduler must find room for and what drives your node count and cost. A modest-looking per-pod request becomes a large total at scale, and it is the total that decides whether a deployment fits the cluster. Seeing it explicitly prevents the surprise of a deployment that will not schedule because the aggregate exceeds capacity.
Requests versus limits, and why both matter
Requests are what the scheduler reserves and guarantees; limits are the ceiling a pod may burst to. The gap between them is where overcommitment lives: set requests too high and you waste capacity, too low and pods get starved or evicted. Totalling both shows the guaranteed footprint and the worst-case one. The calculation runs in your browser.
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Frequently Asked Questions
What is the difference between a request and a limit?
A request is what the scheduler reserves and guarantees for a pod; a limit is the maximum it may use. The scheduler plans by requests; limits cap bursting.
Why total across replicas?
Because the cluster must accommodate the sum, not the per-pod value. A small per-pod request becomes a large total at scale, and the total decides whether the deployment fits.
What happens if requests are too high?
The scheduler reserves more than the pods use, wasting cluster capacity and possibly preventing other workloads from being placed.
What happens if requests are too low?
Pods may be scheduled onto nodes that cannot actually meet their real usage, leading to resource starvation or eviction under pressure.
Is my data uploaded?
No. The calculation runs entirely in your browser.
Privacy & Security
Calculated locally in your browser. No data is sent to any server.
How to Use
Enter per-pod requests/limits and replica count to compute totals.
Disclaimer: This tool is provided "as is" without warranty of any kind. Results are for educational and utility purposes.