About

MoneyReckon builds personal-finance calculators — compound interest, retirement accounts, savings and investing, made for savers, investors and anyone planning their financial future.

Why we built this

Most calculator sites bury the tool under ads, pop-ups and sign-up walls. We take the opposite approach: every calculator on MoneyReckon loads instantly, works on any device, needs no account, and shows your result as you type — with a clear explanation of the formula behind it, so you understand the answer instead of just receiving it.

How our calculators work

All calculations run directly in your browser. The numbers you enter are never sent to our servers, which makes the tools fast and keeps your information private. Each calculator page explains its formula and assumptions, and includes answers to the most common questions.

Accuracy

Every calculator is tested against known reference values before it's published, and we review our formulas regularly. If you ever spot something that looks off, please tell us — we take correctness seriously.