Privacy Policy

Genba Dentaku is a free set of construction calculators. You do not need an account, and we do not ask for your name, email, or other personal information to use the tools. The values you enter stay in your browser and are not sent to our servers. We use a small number of third-party services (analytics, advertising, and fonts) that set cookies, described below.

Calculator inputs, preferences, favorites, and recent history are stored locally in your browser (via localStorage and the page URL). This data stays on your device, is not transmitted to our servers or to third parties, and can be cleared at any time through your browser settings.

We use the following third-party services, which may set cookies or collect usage data:

• Google Analytics 4 — aggregate, anonymized usage statistics. It uses cookies to measure traffic; the data does not identify you personally.
• Google AdSense — advertising. Google and its partners may use cookies to serve and measure ads, including personalized ads based on your prior activity. See your choices below.
• Google Fonts — web fonts, which may involve a request to Google’s servers.

For details, see Google’s Privacy & Terms.

You can control ad personalization through Google Ad Settings and the industry opt-out tools at aboutads.info. You can also block or delete cookies in your browser settings.

Depending on your region, a consent banner is shown on your first visit. You can review or change your choices at any time using the “Your Privacy Choices” link in the site footer.

Because we do not collect personal information to operate the tools, we hold no personal account data about you. Depending on where you live, you may have rights to access, correct, or delete personal data, and to opt out of certain processing. We do not sell your personal information. Under the CCPA/CPRA, we do not “sell” or “share” personal information for cross-context behavioral advertising beyond the cookie-based advertising described above, which you can control with the choices in the previous section. To exercise any right or ask a privacy question, contact us via the contact page.

This site is intended for professional and general audiences and is not directed to children under 13. We do not knowingly collect personal information from children.

This site is operated from Japan; by using it you understand that any data processed by the third-party services above may be handled outside your country. We may update this policy from time to time; material changes will be reflected by the “last updated” date below.