Privacy Policy

Last updated: November 14, 2026

Update required: This policy is a starting template. Review every section marked like this, and have the final text checked against the services you actually use and the laws that apply to you (for example GDPR, UK GDPR, CCPA/CPRA) before publishing.

This Privacy Policy explains how BuildCalcWorld (“we”, “us”, “our”) collects, uses and protects information when you visit https://buildcalcworld.org (the “Site”).

1. Information we collect

Calculator inputs

Our calculators run entirely in your web browser. The measurements and prices you type into a calculator are processed on your device and are not sent to or stored on our servers.

Information you provide

If you contact us by email, we receive your email address and the contents of your message. We use this only to reply to you. The contact form on the Site is not currently connected to a sending service.

Update required: When the contact form is connected to an email provider or backend, describe what is collected, where it is stored, the provider used and how long messages are kept.

Automatically collected information

Like most websites, our hosting provider may automatically log technical information such as your IP address, browser type, referring page and the date and time of your visit, for security and performance purposes.

Update required: Name your hosting provider and state how long server logs are retained.

2. Cookies and similar technologies

Cookies are small text files stored on your device. The core calculators do not require cookies. However, advertising and analytics services we may use can set cookies or use similar technologies (such as local storage or device identifiers) to function, measure performance and personalise content.

You can control or delete cookies through your browser settings. Blocking some cookies may affect how advertising and analytics features work.

Update required: If you serve visitors in the EEA, UK or Switzerland, implement a certified consent management platform (CMP) before setting non-essential cookies, and describe it here.

3. Advertising

We may display advertising to keep the Site free. Advertisements are clearly labelled and are provided by third-party advertising networks. These networks may use cookies and similar technologies to show ads based on your visits to this and other websites.

We may use Google AdSense, an advertising service provided by Google LLC. Google and its partners use cookies to serve ads based on your prior visits to this website or other websites. Google’s use of advertising cookies enables it and its partners to serve ads to you based on your visits to this Site and/or other sites on the internet.

You may opt out of personalised advertising by visiting Google Ads Settings.
You can learn how Google uses information from sites that use its services at policies.google.com/technologies/partner-sites.
You can also opt out of some third-party vendors’ use of cookies for personalised advertising at aboutads.info.

Update required: Confirm whether AdSense is active, whether personalised or non-personalised ads are served, and list any other ad networks or vendors you work with.

5. Analytics

We may use analytics services to understand how visitors use the Site, such as which calculators are most popular. These services typically collect information such as pages visited, time on page, approximate location and device type, usually in aggregated or pseudonymised form.

Update required: Name the analytics tool you use (for example Google Analytics, Plausible or Vercel Analytics), its data retention settings, whether IP anonymisation is enabled and how users can opt out.

6. Third-party services and links

The Site loads fonts and may load scripts from third parties (for example advertising or analytics providers). These providers process data under their own privacy policies. Our articles may link to external websites; we are not responsible for the privacy practices of those sites.

Update required: List all third-party scripts, embeds and services loaded by the Site.

7. How we use information and legal bases

We use information to operate and secure the Site, respond to messages, measure usage and show advertising.

Update required: If GDPR or UK GDPR applies, state the legal basis for each purpose (for example consent for advertising cookies, legitimate interests for security logs).

8. Your rights

Depending on where you live, you may have the right to access, correct, delete or restrict the use of your personal information, to object to processing, to withdraw consent and to lodge a complaint with a data protection authority. To exercise these rights, contact us using the details below.

9. Children’s privacy

The Site is intended for a general audience and is not directed at children under 13 (or the equivalent minimum age in your country). We do not knowingly collect personal information from children.

10. Data security and retention

We take reasonable measures to protect information, but no method of transmission over the internet is completely secure. We keep personal information only as long as necessary for the purposes described in this policy.

11. Changes to this policy

We may update this policy from time to time. The “Last updated” date at the top shows when it last changed.

12. Contact

Questions about this policy can be sent to [email protected] or through our contact page.

Update required: Add the legal name and postal address of the site operator if required in your jurisdiction.