Last Updated: November 6, 2026
A calculator on Launch Hub works even if you refuse every optional cookie, because the arithmetic happens in your browser rather than on our server. A few small pieces of browser storage still make a visit smoother, and advertising or measurement scripts may set their own. This page explains each category plainly, how long it lasts and how to switch off what you do not want.
Trademark Notice
Tool names on this site are descriptive labels, not cleared marks; we run no trademark searches and offer no assurance of availability. Users who adopt any wording commercially do so at their own risk.
Cookies Overview
Cookies are short values a site asks your browser to keep and send back on later requests. On Launch Hub they mostly remember a display choice, such as whether a converter should open with metric or imperial units, so you are not asked to set it again on every page.
We separate what a page needs in order to function from what is optional, and we would rather have fewer of both.
- Session storage keeps a chosen unit system or a collapse state while you move between tools in the same visit.
- Anonymous measurement counts which pages are opened, helping us decide which formulas need a clearer explanation.
- Preference storage remembers small interface choices between visits and can be cleared at any time from your browser.
Essential Cookies
Essential storage covers the bare mechanics of serving a page: keeping a session consistent, remembering a consent choice itself, and protecting forms from trivial abuse. Without these values the site can still perform a calculation, but navigation and consent prompts would behave erratically.
Most essential values expire when the browser session ends; a consent record may persist longer so we do not ask the same question on every visit.
Analytics Cookies
If a measurement script is enabled on this site, it uses identifiers such as _ga and _gid to distinguish browsers and sessions in aggregate. Those values tell us that a collection was opened a certain number of times, not who opened it or which figures were entered. We use the totals to prioritise documentation work.
No cross-site profile is assembled from these identifiers for our own purposes, and you can opt out through browser settings or the consent control.
- The _ga identifier normally persists for up to two years and is used only to separate returning browsers in aggregate counts.
- The _gid identifier usually lasts a single day and groups requests into one session for the same limited measurement purpose.
Advertising Cookies
Google AdSense is used on some pages to support the free library, and the identifiers it sets are limited to delivering and measuring those ads rather than capturing calculator inputs. Where such a partner is active, identifiers like __gads and IDE may be used to limit repeat exposures, measure whether an ad loaded and select broadly relevant creative.
In practice an ad beside a business calculator might refer to general office software rather than anything about your figures.
Cookie Management
Your browser is the main control: it can list, delete or block cookies for this site, and most browsers explain the steps in their privacy settings. Clearing storage resets remembered unit preferences and any saved consent choice, which is inconvenient but harmless to the calculations themselves. We honour Do Not Track signals where the receiving service supports them.
our internal data protocols sets out how the small amount of technical data that remains is handled and retained.
- Rejecting all non-essential cookies leaves every calculator fully usable, since the computation is local to the page.
- Periodic deletion resets preference identifiers and gives you a clean start with the default unit settings.
- A consent banner, where present, offers a granular choice over measurement and advertising storage without affecting essential values.
Editorial Review
The author reviews this page periodically to make sure the descriptions still match the scripts actually loaded on the site. A new plugin, a removed measurement tool or a changed consent control should be reflected here rather than left to an outdated list.
Reviews happen at least quarterly and after significant changes to the site.
Governing Law
This policy is governed by the law of the jurisdiction in which the site operator is established, alongside the privacy rules that apply to readers where they live. Courts of that jurisdiction handle disputes about cookie usage, and consent given or withheld under local law is respected.
Waivers must be express rather than inferred from browsing, and severability preserves the remaining terms if one clause is invalidated.
Contact Us
Write to our Contact Us page or [email protected] with questions about a specific cookie; we reply within two working days. This description applies to every page of the library.