Cloud Calculator GCP: What It Is & How to Use
Google Cloud Platform (GCP) does not have a single tool called a “cloud calculator.” Instead, GCP offers a pricing calculator (the Google Cloud Pricing Calculator) that estimates the monthly cost of GCP services based on the resources you configure, plus several other calculators for specific tasks like sizing Compute Engine instances or estimating data transfer costs. This article explains what the GCP pricing calculator does, how to use it effectively, and how it compares to other cloud cost tools.
What the GCP Pricing Calculator Does
The Google Cloud Pricing Calculator is a web-based tool that lets you build a cost estimate for the GCP services you plan to use. You select a service (like Compute Engine, Cloud Storage, or BigQuery), choose the configuration options (machine type, region, storage class, etc.), and the calculator shows an estimated monthly cost. It also lets you add multiple services to a single estimate, which is useful for estimating the total cost of a project before you deploy anything.
The calculator uses current public list prices, but it does not apply custom discounts or negotiated rates. For organizations with committed use discounts or enterprise agreements, the estimate will be higher than the actual bill. The calculator is a planning tool, not a billing invoice.
How to Use the Google Cloud Pricing Calculator
Using the calculator involves a few straightforward steps, though the interface can be dense with options. Here is the general workflow:
- Go to the Google Cloud Pricing Calculator website (cloud.google.com/products/calculator).
- Click “Add to estimate” to choose a service from the list.
- Configure the service. For example, for Compute Engine, you select the machine series, machine type (like n2-standard-4), region, and whether you want a committed use discount.
- For each service, the calculator shows a subtotal. You can add more services to build a complete estimate.
- When done, you can share the estimate via a link, export it to a spreadsheet, or save it to a file.
One key detail: the calculator gives you an estimate for one month by default. If you need an annual estimate, you can change the time period in the settings, but the default is monthly.
Key Services You Can Estimate
The calculator covers most GCP services, but a few are used more often than others. Here are the most common ones and what you need to know about estimating them:
- Compute Engine – You choose the machine type, number of instances, and operating system. The calculator also lets you add GPUs and SSD persistent disk. Remember that sustained use discounts are applied automatically in the estimate, but committed use discounts must be selected manually.
- Cloud Storage – You select the storage class (Standard, Nearline, Coldline, Archive) and the region. You also enter the amount of data stored and the estimated number of operations (reads, writes, etc.). The calculator then shows the storage cost and the operations cost separately.
- BigQuery – You enter the amount of data scanned by queries per month. The calculator shows the cost of queries, plus storage costs if you enter the amount of data stored.
- Cloud Functions – You enter the number of invocations, the execution time, and the memory allocated. The calculator uses the pricing tiers for invocations and compute time.
Each service has its own set of inputs, so it is worth spending a few minutes exploring the options for the services you plan to use.
Comparing GCP Calculator to AWS and Azure Calculators
If you are comparing cloud providers, you might use the calculators from AWS and Azure as well. Here is how they compare:
- AWS Pricing Calculator – Similar in concept, but it often requires more steps to get an estimate. It also lets you save estimates to a link or export to CSV.
- Azure Pricing Calculator – Very similar to GCP’s, with a clean interface and the ability to add multiple services. It also includes a “TCO calculator” that compares on-premises costs to Azure.
- GCP Pricing Calculator – Generally considered the most straightforward of the three for simple estimates, but it lacks some of the advanced features like the ability to import usage data.
One notable difference: GCP’s calculator does not have a built-in “total cost of ownership” (TCO) comparison tool like Azure’s. If you need to compare on-premises to cloud, you would need to do that manually or use a third-party tool.
Common Mistakes and Misconceptions
People often make a few mistakes when using the GCP pricing calculator. Here are the most common ones:
- Forgetting to select a region – Prices vary by region. If you leave the region as the default (usually us-central1), your estimate may not reflect the cost of the region you plan to use.
- Not accounting for data egress – The calculator has a separate section for network egress. If you plan to transfer data out of GCP, you need to add that separately. Many people forget this and get a lower estimate than the actual bill.
- Assuming the estimate includes taxes – The calculator shows pre-tax costs. Taxes are not included, so your actual bill will be higher.
- Using the calculator for cost optimization – The calculator is a price list, not an optimization tool. It will not tell you if you are over-provisioning or if you could save money by using a different service. For that, you need to use the cost management tools in the GCP console.
Another misconception is that the calculator is the same as the billing dashboard. The billing dashboard shows your actual usage and costs, while the calculator is purely for estimation.
Alternatives and Related Tools
Besides the pricing calculator, GCP offers other tools that help with cost estimation and management:
- Cloud Pricing API – A REST API that lets you query the same price list programmatically. This is useful if you want to build your own cost estimation tool.
- Cost Management tools – In the GCP console, you can use budgets, alerts, and reports to monitor actual spending. These are not calculators, but they help you stay within your estimated budget.
- Third-party calculators – Some companies offer their own cloud cost calculators that aggregate prices from multiple providers. These can be useful for comparing GCP to AWS or Azure, but they may not be up to date.
For a quick estimate of a single VM, you can also use the Compute Engine pricing page, which shows per-instance prices for each machine type and region. However, the pricing calculator is more flexible because it lets you combine multiple services.
Frequently Asked Questions
Is the GCP Pricing Calculator free to use?
Yes, the calculator is completely free. It is a web-based tool that you do not need an account to use, though you can sign in to save estimates. It is a planning tool, so using it does not incur any charges.
Does the calculator include sustained use discounts?
Yes, for Compute Engine, the calculator automatically applies sustained use discounts for instances that run for more than 25% of the month. However, committed use discounts must be manually selected by choosing the appropriate option in the calculator.
Can I export my estimate to a spreadsheet?
Yes, the calculator has an “Export” button that lets you download your estimate as a CSV file. You can also share a link to your estimate so others can view it.
Why is my actual bill higher than the calculator estimate?
There are several reasons. The calculator does not include taxes, data egress, or any custom discounts you might have. Also, if you use more resources than you estimated, your bill will be higher. The calculator is only as accurate as the inputs you provide.
Does the calculator support all GCP services?
Most services are covered, but not all. Some newer or niche services may not be listed. In that case, you can estimate the cost manually using the pricing page for that service.
Can I use the calculator to estimate costs in a specific currency?
Yes, the calculator lets you select the currency in the settings. The default is US dollars, but you can choose from many other currencies. Note that the exchange rates are updated periodically, so the estimate is approximate.
Related
Method: the standard formula for this calculation, rounded as each result states. See how the calculators work or report an error.