About ZizzoMoney

Free educational calculators for everyday money questions — built to be plain, accurate, and honest about what they can and can't tell you.

What this site is

ZizzoMoney is a collection of free financial calculators wrapped in short, plain-language explanations. Each tool answers one common question — how compound interest grows savings, what a loan really costs, and so on. Every page shows the exact formula it uses, so you can check the math yourself or reproduce it in a spreadsheet.

What this site never does

• No individualized advice. The tools are educational. They show how a formula behaves with the numbers you type — they don't know your situation and don't make recommendations.
• No data collection. Every calculation runs in your browser. The numbers you enter are never sent to a server, stored, or seen by anyone.
• No accounts, ever. Nothing here connects to a bank, brokerage, or any financial account. There is nothing to sign up for.
• No hype. Where a calculator needs an assumption — like a default rate of return — it's labeled as an editable assumption, not a promise or a prediction.

How the math is checked

Every calculator's formula is the standard, textbook form, shown on its page. Each one is verified against independently computed test values — including edge cases like a 0% rate — before it's published. If you ever find a number that looks wrong, please say so; accuracy matters more here than anything else.

Who runs it

ZizzoMoney is built and maintained by one independent developer under the Zizzo name — the same operator as ZizzoLabs. The site is pseudonymous, but never anonymous when it matters: you can reach the operator any time at [email protected], and every question about how a tool works gets a straight answer.

How the site is funded

The site may show ads. Ads never change the math, never appear between a calculator's inputs and its results, and the content is never written to please an advertiser.