About CalcTools

CalcTools provides free, fast, and accurate business calculators that work instantly in your browser. No signup required, no data stored. Just type your numbers and get answers.

Every calculator includes detailed explanations of the formulas used, practical essays on when and why to use each tool, and contextual recommendations for related software that can help automate these calculations in your business.

Whether you're pricing a product, planning a hire, estimating startup costs, comparing loan terms, or forecasting cash flow | CalcTools gives you the clarity to make smarter financial decisions.

Hi, I'm Dana Colvin. I started CalcTools after years of running my own small business and getting frustrated by how hard it was to find straightforward answers to basic financial questions, without signing up for software I didn't need.

I've been through payroll headaches, tax-season panic, pricing guesswork, and the "can I actually afford to hire someone?" math. CalcTools is the resource I wish I'd had from day one. simple calculators backed by clear explanations, built for people who'd rather run their business than wrestle with spreadsheets.

Every blog post and calculator on this site comes from real questions small-business owners ask every day. No jargon walls, no upsells. Just the numbers you need to make better decisions.