About FinCalcs

FinCalcs is a collection of free calculators for investing, profitability, real estate and startups. Every tool runs entirely in your browser — the numbers you type never leave your device.

We built FinCalcs because most calculator sites are cluttered with trackers and upsells. Ours are plain, fast and private. The formulas are standard, publicly known math that does not change, so the site stays correct without updates.

The site is maintained by an independent maker. It earns, if at all, only through non-intrusive advertising once traffic justifies it. We do not sell or see your data.