Cloud Cost Calculator
Add up compute, storage, and data-transfer charges to estimate what your cloud deployment costs per month and per year.
Reviewed by the CalcCafe editorial team · Last updated 1 July 2026 · How we test our tools
Example
Three instances at $0.096/hr running 730 hours each cost 3 × 0.096 × 730 = $210.24 in compute. Add 500 GB of storage at $0.10/GB ($50.00) and 200 GB of egress at $0.09/GB ($18.00), and the total is $278.24 per month, or about $3,338.88 per year.
How it works
Monthly cost = (instances × hourly rate × hours per month) + (storage GB × storage price) + (egress GB × egress price). The three parts are the compute, storage, and data-transfer charges; annual cost = monthly × 12.
Good to know
Cloud bills are really just three moving parts stacked together: the machines you run, the data you keep, and the data you send out. This calculator makes each part explicit so you can see where the money actually goes before you provision anything. The compute line multiplies how many instances you run by their hourly rate and the hours they stay on — 730 is the average hours in a month, so it represents an instance left running around the clock.
Storage and egress are the parts that quietly surprise people. Storage is usually cheap per gigabyte but accumulates because data rarely gets deleted, while egress — data leaving the provider's network to your users or another region — is often billed at a rate that dwarfs what you pay to store the same bytes. Plugging in realistic transfer volumes here is a good way to catch a bill shock early, especially for media-heavy or multi-region apps.
The numbers use on-demand, list-price assumptions, which is the most expensive way to buy cloud. Reserved instances, savings plans, committed-use discounts, and spot capacity can cut compute by a large margin, and most providers include a free tier and free inbound transfer. Taxes, support plans, load balancers, managed databases, and per-request API charges are not modeled, so treat the result as a floor for a simple deployment rather than a full invoice.
Use it to compare scenarios: bump the instance count to size a launch, raise egress to model a traffic spike, or lower the hours to price a workload that only runs part of the day. It is an estimate to guide planning, not a quote or billing advice — confirm current rates in your provider's pricing pages and cost calculator.
Frequently asked questions
Why is data egress so expensive on cloud providers?
Most providers charge little or nothing to move data in but bill outbound transfer (egress) per gigabyte, and those rates add up fast for media, backups, or cross-region traffic. Modeling egress separately, as this tool does, helps you spot it before it dominates the bill.
What does 730 hours per month mean?
730 is the average number of hours in a month (8,760 hours a year ÷ 12). It represents an instance running continuously all month, which is why providers use it as the baseline for on-demand pricing.
Is my data uploaded anywhere?
No — this calculator runs entirely in your browser. Your inputs never leave your device, and it works offline once loaded.
Is this calculator free?
Yes, completely free with no sign-up and no limits.
People also ask
How do I estimate my monthly cloud bill?
Add up three costs: compute (instances × hourly rate × hours run), storage (GB × price per GB), and egress (GB transferred out × price per GB). This calculator totals them instantly and projects the annual figure.
How can I reduce cloud computing costs?
Use reserved instances or savings plans for steady workloads, spot instances for interruptible jobs, right-size or auto-scale instances, delete unused storage, and cut egress with caching and a CDN. On-demand list pricing, shown here, is the most expensive baseline.
Does this include reserved or spot pricing?
No — it assumes on-demand list prices. Reserved, committed-use, and spot discounts can lower compute significantly, so enter a discounted hourly rate if you want to model them.
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Sources & references
These tools follow our methodology and provide educational estimates only — verify important figures with a qualified professional.