AWS Pricing Calculator for Workloads
This calculator helps you estimate a realistic monthly AWS bill by combining on-demand compute consumption, storage usage, outbound data transfer, optional managed services, savings plan discounts, and support plan percentages. Enter the core usage metrics from your architecture review, then compare results with actual invoices to fine-tune your assumptions.
How the AWS Pricing Calculator Works
Compute costs are based on the total hours that EC2, Fargate, or Lambda provisioned concurrency runs in a month multiplied by the blended hourly rate you expect after Reserved Instances or savings plan commitments. Storage pricing is calculated by multiplying provisioned gigabytes for EBS, EFS, or S3 classes by their per-gigabyte rate. Data transfer considers only outbound traffic, as inbound data is typically free on AWS. Managed services and database subscriptions capture fixed charges from services such as RDS, Redshift, or OpenSearch. Support plans charge a percentage of your spend, so adding this percentage gives a more accurate total. Finally, credits reduce the invoice and are subtracted at the end.
Tips for Accurate Estimates
- Separate bursty and steady workloads so you can apply the right savings discount to each group of compute hours.
- Use lifecycle policies and storage classes like S3 Infrequent Access to lower the storage rate per gigabyte when data is cold.
- Estimate data transfer for both inter-AZ replication and public egress; transfer between regions usually costs more.
- Include third-party marketplace subscriptions under managed services to avoid surprise line items.
- Review the Business or Enterprise support percentage tiers, as they scale down when monthly spend rises.
Example AWS Cost Scenario
A data engineering team runs 720 compute hours on c6i.large instances at 0.12 USD per hour. A 15 percent savings plan brings the compute charge down to 73.44 USD. They store 5000 GB of S3 Standard objects at 0.023 USD per GB, costing 115 USD, and move 2000 GB of analytics results to the internet at 0.09 USD per GB, costing 180 USD. Managed databases add 200 USD. With a 10 percent support plan, support fees total 56.84 USD on the pre-credit spend. After applying 100 USD of promotional credits, the estimated invoice is roughly 525.28 USD for the month. Input these numbers above to see the same breakdown dynamically and adjust each metric to mirror your environment.