About CalcSite

What this site is

CalcSite is a collection of calculators for everyday questions — loans, interest, taxes, savings, and the arithmetic that sits behind them. Each calculator page shows the formula it uses, works through examples with real numbers, and says what happens at the edges, where the formula stops being a good description of the world.

The reason the working is shown is that a calculator which only prints an answer asks you to trust it. An answer you can check is worth more than an answer you cannot, even when both are correct.

What it is not

A calculator is a model. It is arithmetic plus assumptions, and the assumptions decide the answer — which is why each page states them. CalcSite is not a substitute for advice from a qualified professional: nothing here is financial, legal, tax or medical advice, and no page knows your circumstances.

Where a page covers a product offered by a bank, broker or other institution, that institution has no involvement in this site, and the page is not affiliated with, endorsed by or sponsored by it. Product names are used to describe the arithmetic, not to recommend anything.

How it is built

The calculators run entirely in your browser. The page you load contains the formula and the arithmetic; when you change a number, the answer is recomputed on your own device. Nothing you type is sent anywhere, and there is no account to create.

Pages are generated as static files. That is a deliberate choice: there is no application server to fall over, and nothing about a calculation depends on the site being reachable at a particular moment.

Corrections

If a number here is wrong, or a page describes a rule that no longer holds, write to support@ytscript.app and say which page and which figure. A specific correction is acted on; a general complaint about accuracy is hard to act on.