About Calcapr

Calcapr builds free, no-sign-up finance calculators. We started it because the best answer to most money questions is math, not opinion — so we built tools that do the math on your numbers instead of averages.

Who's behind it

Calcapr is built and maintained by Ello Hanks. Questions, corrections, or tool requests: contact page.

How Calcapr is funded

Display advertising, and in time, clearly-disclosed affiliate relationships. We never require accounts, and we never sell or share your data — the tools run entirely in your browser.

How to use the tools

Every calculator lists its assumptions right on the page, and the methodology documents the formulas behind each result. When a number matters to you, the tool shows the full calculation, not just a headline figure.