Amazon Web Services (AWS) offers a vast array of services, each with its own pricing model. Accurately estimating your AWS costs is crucial for budget planning and optimizing your cloud spend. This calculator provides a simplified model for estimating costs based on key services: EC2 (Elastic Compute Cloud), S3 (Simple Storage Service), RDS (Relational Database Service), and Lambda.
Key Components and Calculation Logic:
EC2 Instance Cost: This is typically calculated based on the instance type, the operating system, the region, and the duration the instance is running. For simplicity, we use a flat hourly rate.
Formula:EC2 Cost = EC2 Instance Hours * EC2 Cost per Hour
S3 Storage Cost: S3 charges are primarily based on the amount of data stored (GB-month) and the number of requests made (GET, PUT, etc.). This calculator focuses on storage volume.
Formula:S3 Storage Cost = S3 Storage (GB) * S3 Cost per GB
RDS Instance Cost: Similar to EC2, RDS costs depend on the database engine, instance class, Multi-AZ deployment, and running hours.
Formula:RDS Cost = RDS Instance Hours * RDS Cost per Hour
Lambda Cost: AWS Lambda pricing is based on the number of requests (invocations) and the compute duration (GB-seconds). For this calculator, we simplify it to cost per million invocations.
Formula:Lambda Cost = (Lambda Invocations / 1,000,000) * Lambda Cost per Million Invocations
Total Estimated Monthly Cost:
The total estimated cost is the sum of the costs calculated for each individual service.
Formula:Total Cost = EC2 Cost + S3 Storage Cost + RDS Cost + Lambda Cost
Important Considerations:
Simplified Model: This calculator uses simplified pricing assumptions. Actual AWS costs can be more complex, involving factors like data transfer, API requests, reserved instances, spot instances, storage classes (e.g., S3 Intelligent-Tiering), AWS Support plans, and regional pricing differences.
Other AWS Services: AWS offers hundreds of services (e.g., VPC, CloudFront, DynamoDB, CloudWatch, IAM). Their costs are not included in this basic calculator.
AWS Free Tier: New AWS accounts may be eligible for a free tier for certain services, which can significantly reduce initial costs.
Optimization: Regularly review your AWS usage and costs. Services like AWS Cost Explorer and AWS Budgets can provide detailed insights and alerts. Consider rightsizing instances, using auto-scaling, and leveraging S3 lifecycle policies.
For precise cost estimations, it is highly recommended to use the official AWS Pricing Calculator and consult AWS documentation for the specific services and configurations you intend to use.
function calculateAWSCosts() {
var ec2Hours = parseFloat(document.getElementById("ec2Hours").value);
var ec2PriceHour = parseFloat(document.getElementById("ec2PriceHour").value);
var s3StorageGB = parseFloat(document.getElementById("s3StorageGB").value);
var s3PriceGB = parseFloat(document.getElementById("s3PriceGB").value);
var rdsHours = parseFloat(document.getElementById("rdsHours").value);
var rdsPriceHour = parseFloat(document.getElementById("rdsPriceHour").value);
var lambdaInvocations = parseFloat(document.getElementById("lambdaInvocations").value);
var lambdaPriceInvocation = parseFloat(document.getElementById("lambdaPriceInvocation").value);
var totalCost = 0;
// Validate inputs
if (isNaN(ec2Hours) || ec2Hours < 0) ec2Hours = 0;
if (isNaN(ec2PriceHour) || ec2PriceHour < 0) ec2PriceHour = 0;
if (isNaN(s3StorageGB) || s3StorageGB < 0) s3StorageGB = 0;
if (isNaN(s3PriceGB) || s3PriceGB < 0) s3PriceGB = 0;
if (isNaN(rdsHours) || rdsHours < 0) rdsHours = 0;
if (isNaN(rdsPriceHour) || rdsPriceHour < 0) rdsPriceHour = 0;
if (isNaN(lambdaInvocations) || lambdaInvocations < 0) lambdaInvocations = 0;
if (isNaN(lambdaPriceInvocation) || lambdaPriceInvocation < 0) lambdaPriceInvocation = 0;
var ec2Total = ec2Hours * ec2PriceHour;
var s3Total = s3StorageGB * s3PriceGB;
var rdsTotal = rdsHours * rdsPriceHour;
// Lambda cost is per million invocations, so we divide by 1 million
var lambdaTotal = (lambdaInvocations / 1000000) * lambdaPriceInvocation;
totalCost = ec2Total + s3Total + rdsTotal + lambdaTotal;
document.getElementById("result-value").innerText = "$" + totalCost.toFixed(2);
}