What this calculator does
Whether you're new to developer & utility numbers or run them every week, the cloud cost calculator (aws, azure, gcp) gives the same clean result — with a live chart and a copyable summary you can drop into any doc.
The Cloud Cost Calculator lets you compare monthly infrastructure spend across AWS EC2, Azure Virtual Machines and GCP Compute Engine. Pick an instance type, add storage and egress, then apply a 1-year or 3-year commitment discount to see how much reserved capacity saves.
How to use the Cloud Cost Calculator (AWS, Azure, GCP)
- Choose an instance type — the label shows vCPUs and memory.
- Enter instance count and hours/day running (24 for always-on production, less for dev/staging).
- Add storage GB, price/GB-month and monthly egress GB with its price.
- Pick a commitment level to model savings-plan or reserved-instance discounts.
The formula
monthly_cost = rate × hours_per_day × 30.44 × count × (1 − discount) + storage_gb × storage_price × count + egress_gb × egress_price
Worked example
3× AWS m5.large @ $0.096/hr, 24/7: 0.096 × 730 × 3 = $210.24 on-demand. With a 1-year savings plan (−30%) → $147.17 compute. Add 100 GB × $0.10 × 3 = $30 storage + 200 GB × $0.09 = $18 egress → $195.17/month.
Common mistakes
- Comparing on-demand prices only — reserved and spot pricing change the ranking entirely.
- Ignoring egress — 1 TB of egress out of AWS can cost more than the VMs themselves.
- Assuming a small instance running 24/7 is cheap — it often costs more than a bigger one running 8h/day.
When to use it
Use to compare AWS vs Azure vs GCP for the same workload, decide whether a savings plan is worth it, or size a new environment before you provision it.
Pro tips for the Cloud Cost Calculator (AWS, Azure, GCP)
- Use Print / PDF to export a clean, ad-free summary you can share with a client or advisor.
- The chart updates live — drag values up and down to build intuition for how the formula behaves.
- Change one input at a time to see which lever actually moves the answer the most.
Frequently asked questions
›Are these list prices?
Yes — public on-demand list prices in US regions. Enterprise discounts, spot instances and free-tier credits will lower the real bill.
›Spot / preemptible?
Spot is typically 60–90% cheaper than on-demand but can be interrupted. Model it by using the 3-year reserved option as a lower bound.
›Which cloud is cheapest?
For general-purpose VMs, GCP e2 and AWS t3 are usually cheapest; for high memory Azure often wins. Compare like-for-like specs here.
›Does this include load balancers or NAT?
No — those are separately billed. Add them as a fixed monthly line item to your budget.
›Storage IOPS?
The default price/GB-month covers general-purpose SSD (gp3, Standard SSD, pd-balanced). High-IOPS tiers cost 3–10× more.
›Can I embed the Cloud Cost Calculator (AWS, Azure, GCP) on my site?
Embedding isn't public yet, but you can link directly to this page — the URL is stable and shareable.
›Is the Cloud Cost Calculator (AWS, Azure, GCP) free to use?
Yes. Every calculator on CalcPilot, including the Cloud Cost Calculator (AWS, Azure, GCP), is free with no sign-up, no watermark, and no export limit.
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