You can use these calculators to calculate the potential costs of operating a small buisiness, and more..

Small Business Risk Calculator | Symantec
This risk calculator helps estimate the potential costs of operating a business without computer and data protection.

iPhone and iPod calculators

App Store - Easy Books
Easy Books is professional business bookkeeping, invoicing and time-tracking for iPad, iPhone and Mac.

iPad calculators

App Store - Easy Books
Easy Books is professional business bookkeeping, invoicing and time-tracking for iPad, iPhone and Mac.