Amazon CloudWatch Pricing

Free Tier*

You can get started with Amazon CloudWatch for free. Many applications should be able to operate within these free tier limits.

Basic Monitoring metrics (at five-minute frequency) for Amazon EC2 instances are free of charge, as are all metrics for Amazon EBS volumes, Elastic Load Balancers, and Amazon RDS DB instances.
New and existing customers also receive 10 metrics (applicable to Detailed Monitoring for Amazon EC2 instances or Custom Metrics), 10 alarms, and 1 million API requests each month at no additional charge.

Pay only for what you use. There is no minimum fee. You will be charged at the end of the month for your usage. Estimate your monthly bill using the AWS Simple Monthly Calculator.

For Amazon CloudWatch metrics and alarms, each partial month is billed on a pro rata basis, hourly.

AWS GovCloud Region

AWS GovCloud is an AWS Region designed to allow U.S. government agencies and contractors to move more sensitive workloads into the cloud by addressing their specific regulatory and compliance requirements. For pricing and more information on the new AWS GovCloud Region, please visit the AWS GovCloud Web Page.

* Your free usage is calculated each month across all regions and automatically applied to your bill — free usage does not accumulate.

Note: This new pricing for Detailed Monitoring (representing a 65% decrease from the current price) takes effect starting June 1, 2011. Prior to that, the price remains $0.015 per instance-hour or partial hour. Pricing for Amazon CloudWatch Custom Metrics takes effect starting June 1, 2011. Custom metrics (that you send and Amazon CloudWatch monitors) before that time are free of charge. Pricing for API requests begins July 1, 2011. API requests before that time are free of charge.