This calculator will help you figure out how much spam costs your enterprise each year - and can be used to develop a call for action to get the resources you need to fight the problem. Plug in your enterprise's numbers and assumptions below and the calculator will tell you the damage. The algorithms are based on work by Mark Gibbs - follow the links below or on the results page for advice from him on just what to do with the numbers that result.

**NOTE:** Don't use commas when inputting large numbers.

### Additional resources

What spam really costs, part 1

Mark Gibbs introduces the spam calculator (from this article, you can also download an Excel spreadsheet that lets you play even more with the numbers).

What spam really costs, part 2

After you've calculated your spam costs, what next? Gibbs offers some tips on building a case for action for your CEO.

Spam research center

The latest spam news, analysis and links.