Paul Howard –

I recently had to spend some time working out the costs involved in running Amazon’s EC2 servers compared to running full leased or purchased servers.

In the end I created a quick spreadsheet that estimated the costs based on running the servers full time over a 30 day period.

I thought I would offer the spreadsheet here in case others were trying to calculate the costs too.

amazon_ec2_pricing_calculator

All costs are correct as of April 2009. Please let me know if you find any errors or problems.