Privacy Policy

What this site collects and what it does not — including the part that is not nothing: Google Analytics.

Lot Size Calculator

The short version

Two separate things are going on, and they are worth keeping apart:

Your calculator inputs

Everything you type into the calculator stays in your browser's memory for as long as the tab is open. Closing the tab discards it. There is no account, no login, no registration form, no newsletter signup and no email capture here — you cannot create an account even if you want to.

The script that does the arithmetic:

Google Analytics: what is installed, what it collects, what it is for

What is installed. This site runs Google Analytics 4 (GA4), Google's web analytics product. The measurement ID is G-LEBPLK79H4. The code is loaded from googletagmanager.com, which makes it the only third-party resource any page on this site loads.

The installation is Google's stock snippet and nothing more — a single gtag('config', 'G-LEBPLK79H4') call. No custom events, no custom dimensions, no user-ID tracking and no advertising features have been added on top of it.

What it collects. On each page view, Google Analytics records roughly this:

What we use it for. Four things, and nothing beyond them:

It is not used for advertising targeting, it is not sold or shared with anyone, and it is not used to work out who you are. The reports are aggregated, and there is no account system on this site that could attach a name to a visitor.

What is not sent to it. The numbers you type into the calculator — balance, risk percentage, instrument, entry price, stop loss — are never included in anything sent to Google Analytics. The only event this site sends is a standard page view, which carries no form values.

Who ends up holding the data. Google does. It may process it in the United States and other countries. How long it is kept is a setting inside the Google Analytics property — you can see the current value under Admin → Data settings → Data retention — and this page has no control over it. Google's own rules govern what it does with the data, not ours:

Cookies

The calculator sets no cookies. Google Analytics does. Specifically it sets first-party cookies beginning with _ga (typically _ga and _ga_<measurement-id>) to tell one visit apart from another and to tell returning visitors from new ones. Those cookies are written by Google's script, and they persist in your browser between visits until they expire or you delete them.

You can stop them:

What the web server may still see

The above covers what the site's own code and Google Analytics do. It does not cover the machine that serves the files. Like any website, the web server hosting these pages can record standard request information — your IP address, the file you asked for, your browser's user agent and the time of the request — in its access logs. That is a property of how web hosting works and of how this site's hosting is configured, not something this page controls or reads. If that matters to you, assume a request log exists.

Advertising

Right now: there is no advertising on this site. No ad scripts are loaded, no ad requests are made, and no advertising cookies are set. The only third-party resource these pages load today is the Google Analytics script described above.

This site is intended to display advertising, and that advertising will be served by third-party ad networks. It is stated here in advance rather than slipped in later, so that the following is on record before the first ad ever appears:

Before the first advertisement is displayed, this paragraph will be replaced with the name of the actual ad network in use, a link to its privacy policy, and the specific way to opt out of interest-based advertising through it. Until that edit appears here, treat the paragraph above as the current state: no ads, and no ad-related tracking beyond the analytics described above.

Links to other sites

The instrument coverage table on the home page names the public sources the symbol lists were taken from. Those names are plain text; they are not loaded resources. Following them, or following the Google links on this page, is your choice. This privacy policy does not cover any site you reach from here.

Children

This site is a calculator for people trading leveraged products, which are restricted to adults. It is not directed at children and no information is knowingly collected from them.

Changes

If this policy changes, the change will be made on this page and the date below will move. The promise that does not change: what you type into the calculator is computed in your browser and is not uploaded.

Questions

Use the contact page.

This policy was last updated on 17 September 2026 — Google Analytics was added and the advertising section above was written to state, in advance, that third-party advertising is intended.