1. Choose an Architecture
2. Adjust Parameters
3. Cost Estimate
AWS Free Tier Coverage
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Contact Automated Insights LLCHow to Use the AWS Cost Calculator
This calculator is designed for developers, startups, and engineering teams who need a quick, realistic estimate of monthly AWS spending before committing to an architecture. Rather than forcing you to price each service individually, it groups services into common architecture patterns so you can see the full picture at a glance.
Getting Started
Choose an architecture pattern that matches your project -- static website, serverless API, traditional web app, containerized app, ML inference, or data pipeline. Each pattern bundles the AWS services that typically go together. Then adjust the parameter sliders for your expected traffic, storage, and compute needs. The cost breakdown updates instantly, showing per-service costs and a total estimate.
Understanding EC2 Pricing Models
EC2 instances come in three pricing tiers. On-demand is the default -- you pay by the hour with no commitment and can stop anytime. Reserved Instances let you commit to 1 or 3 years for 30-60% savings, which makes sense for predictable workloads. Spot Instances offer up to 90% discounts but can be interrupted with two minutes' notice, making them ideal for batch processing and fault-tolerant tasks.
S3 Storage Tiers and Data Transfer
S3 Standard is the default storage class for frequently accessed data. S3 Infrequent Access costs about 45% less per GB but charges a retrieval fee. S3 Glacier is designed for archival data with retrieval times measured in minutes to hours. Data transfer out of AWS is one of the most overlooked costs -- the first 100 GB/month is free, but after that you pay per-GB rates that add up quickly for media-heavy applications.
Tips for Reducing Your AWS Bill
- Start serverless with Lambda and DynamoDB to avoid paying for idle compute. You only pay when requests come in.
- Use CloudFront in front of S3 or your API to reduce data transfer costs and improve latency globally.
- Enable S3 Lifecycle Policies to automatically move old objects to cheaper storage tiers.
- Set up AWS Budgets to receive alerts before you hit spending thresholds. Surprise bills are the most common complaint from new AWS users.
Frequently Asked Questions
How accurate are these estimates?
These estimates are based on published AWS list prices for the US East (N. Virginia) region and are designed to give you a ballpark figure. Actual costs may vary based on your region, negotiated discounts, reserved instance commitments, and exact usage patterns. For production planning, cross-reference with the official AWS Pricing Calculator.
What is the AWS Free Tier?
AWS offers a 12-month free tier for new accounts that includes 750 hours of t2.micro or t3.micro EC2, 5 GB of S3 storage, 1 million Lambda requests, and 25 GB of DynamoDB. Some services like Lambda and DynamoDB have always-free tiers that apply even after 12 months. Our calculator shows which portions of your estimate fall under the free tier.
Should I choose serverless or EC2?
If your traffic is unpredictable or low, serverless (Lambda + API Gateway) scales to zero and costs nothing when idle. If you have steady, high-throughput traffic, EC2 with Reserved Instances can be more cost-effective. The crossover point is typically around 1-2 million requests per day, depending on compute requirements per request.
Why is data transfer so expensive?
AWS charges for data leaving its network because it covers bandwidth costs to ISPs and peering partners. Data transfer between services in the same region is usually free or very cheap. To minimize transfer costs, use CloudFront for content delivery, compress responses, and keep inter-service traffic within the same Availability Zone when possible.
Does this tool store any of my data?
No. All calculations happen in your browser using JavaScript. No usage data, architecture selections, or slider values are transmitted to any server.
Understanding AWS Pricing
Amazon Web Services (AWS) uses a pay-as-you-go pricing model, meaning you only pay for the resources you actually consume. While this offers flexibility, it can make cost estimation challenging -- especially when combining multiple services into a complete architecture.
How Much Does AWS Cost?
AWS costs vary dramatically depending on your architecture. A simple static website hosted on S3 and CloudFront can cost under $5/month, while a production machine learning inference pipeline can run thousands per month. The key factors that drive cost are:
- Compute -- EC2 instances, Lambda invocations, ECS Fargate tasks, or SageMaker endpoints
- Storage -- S3 object storage, EBS volumes, RDS database storage
- Data Transfer -- Bandwidth out to the internet, between regions, or between services
- Requests -- API Gateway calls, CloudFront requests, DynamoDB read/write units
AWS Free Tier
AWS offers a generous free tier for new accounts (12 months) and some always-free services. This includes 1 million Lambda requests/month, 750 hours of t2.micro/t3.micro EC2, 5 GB of S3 storage, and 25 GB of DynamoDB storage. Our calculator shows exactly which parts of your estimate are covered by the free tier.
Cheapest Way to Host on AWS
For most small projects, the cheapest hosting option is a static site on S3 + CloudFront. If you need server-side logic, a serverless architecture using Lambda + API Gateway + DynamoDB scales to zero and costs nothing at low traffic levels. Traditional EC2-based hosting starts around $8-10/month for the smallest instances and increases with traffic and compute requirements.
Tips for Reducing AWS Costs
- Reserved Instances -- Commit to 1 or 3 years for 30-60% savings on EC2 and RDS
- Spot Instances -- Use for fault-tolerant workloads at up to 90% discount
- Right-sizing -- Monitor utilization and downsize over-provisioned instances
- S3 Lifecycle Policies -- Automatically move infrequently accessed data to cheaper storage tiers
- Auto Scaling -- Scale down during low-traffic periods
- AWS Cost Explorer -- Use native tools to identify spending trends
Getting Started with AWS
New to AWS? These official resources will help you get started and keep costs under control.
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AWS Free Tier
750 hours of EC2, 5 GB S3 storage, 1M Lambda requests/month, and more -- free for 12 months.
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AWS Pricing Calculator
Official AWS tool for detailed, service-by-service cost estimates with region-specific pricing.
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AWS Lambda
Run code without provisioning servers. Free tier includes 1M requests and 400,000 GB-seconds per month.
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Amazon S3
Scalable object storage starting at $0.023/GB per month. Ideal for static assets, backups, and data lakes.
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Amazon EC2
Virtual servers in the cloud. Choose from 750+ instance types optimized for compute, memory, or storage.
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