Privacy Policy

Last updated: 1 October 2026

HomeProjectCalcs (“we”, “us”) operates homeprojectcalcs.com. We are based in Spain and this policy is written to comply with the EU General Data Protection Regulation (GDPR) and the ePrivacy Directive. The short version: the calculators run entirely in your browser, we don’t ask for accounts or store your inputs, and any data collection comes from the third-party services described below.

Who is responsible for this site

The company identified below is responsible for this website and the personal data described here. For privacy questions, email info@homeprojectcalcs.comor write to the registered address shown.

Data the calculators process

Numbers you type into a calculator are processed in your browser only. They are not transmitted by the calculator to our servers, stored, or shared. Reloading a page clears them. Your Imperial or Metric preference is saved in browser local storage under “hpc-unit” so the next calculator opens in your preferred units. Clearing site data removes this preference.

Hosting and server logs

Our hosting provider may keep standard server logs (IP address, user agent, requested URL, timestamp) for security and abuse prevention. These logs are kept for a limited period and are not used to identify visitors. The legal basis is legitimate interest (Art. 6(1)(f) GDPR).

Cookies and consent

The site itself does not set cookies. If advertising or analytics are enabled (see below), those services may set cookies or use similar technologies. Where required by law, Google’s consent message, provided through AdSense, asks for your consent before any such cookies are set, and you can change or withdraw your choice at any time through that message.

Advertising

We may display ads served by Google AdSense or comparable networks. Ad partners may process personal data (such as your IP address and ad interaction data) and, with your consent, use cookies to personalise ads. Without consent, ads are shown on a non-personalised basis. Google publishes details of its data handling at policies.google.com/technologies/partner-sites. You can manage ad personalisation in your Google settings or via Google’s consent message.

Analytics

We use Umami analytics through stats.admk.com. Its browser script sends page-view information including the page URL and title, referring page, browser language, and screen dimensions to that service. Calculator input values are not included in those page-view events. The analytics request also reaches the service through your network connection. For questions about analytics data or retention, contact us using the details below.

Your rights (GDPR)

As an EU/EEA visitor you have the right to access, rectify, and erase personal data we hold about you, to restrict or object to processing, and to data portability. Because we hold essentially no personal data ourselves, most requests will concern our hosting or advertising partners — but you can always start with us and we will help route the request. You also have the right to lodge a complaint with your supervisory authority; in Spain that is the AEPD (Agencia Española de Protección de Datos).

Children

The site is a general-audience utility and does not knowingly collect personal data from children.

Changes and contact

We will update this page when our data practices change and revise the date above. Questions and requests: info@homeprojectcalcs.com or the contact page.