About IHaveTool

IHaveTool is a growing collection of free calculators and tools for people who sell online. The focus is practical seller math: profit, fees, shipping, pricing, advertising, and everyday business calculations.

Every calculator runs entirely in your browser. Your inputs are not sent to a server, so you can use the tools with confidence. There is no account to create and nothing to install.

The project is under active development. Tools are added over time, and each one is tested before it is published.