✅ The short version: This is the site-wide privacy declaration for calcestimator.com. It applies to every page, calculator, and feature on this domain — not to individual tools separately.
We do not collect, store, or sell your personal information. Calculator inputs run entirely in your browser — nothing you type into our tools is transmitted to our servers.
Where we display third-party advertising (such as Google AdSense), those partners may use cookies as described in Section 5.
1. Scope — Site-Wide Policy
This Privacy Policy is the site-wide privacy declaration for calcestimator.com (the "Site"). It governs how we handle information whenever you access or use any part of the Site, including:
- All calculator tools, estimators, and converters hosted on this domain
- Category pages, search, the home page, and all editorial or reference content
- System and legal pages such as About Us, Terms of Use, and this Privacy Policy
- Any current or future pages, features, or services offered at calcestimator.com
By visiting or using any page on the Site, you acknowledge this policy. Use of a specific calculator does not create separate privacy terms — the practices described here apply uniformly across the entire website.
Our Terms of Use govern your use of the Site; this policy governs how we handle information in connection with that use.
2. Short Summary
calcestimator.com is designed with privacy as a default, not an afterthought. We keep data collection to a minimum: calculator inputs run locally in your browser and are not stored on our servers. Where we display third-party advertising, those partners may use cookies as described below.
When you use any calculator on this site, your inputs (weight, location, health conditions, financial information, etc.) are processed entirely within your browser using JavaScript. This data is never transmitted to our servers, never stored in a database, and never shared with third parties.
3. What We Collect
When you visit calcestimator.com, we may receive basic technical information that is standard to web server operation:
| Data Type | Collected? | Purpose | Retention |
|---|---|---|---|
| Calculator inputs (weight, location, health data, etc.) | No — never | N/A | N/A |
| Calculator outputs / results | No — never | N/A | N/A |
| Name, email, or contact information | No — unless you email us | To respond to your inquiry | As long as necessary |
| IP address | Possibly, via server logs | Security, abuse prevention | 30 days maximum |
| Browser type and version | Possibly, via server logs | Technical compatibility | 30 days maximum |
| Pages visited and time spent | Aggregate only, if analytics enabled | Understanding site usage | Per analytics provider policy |
| Referral source (how you found us) | Aggregate only, if analytics enabled | Understanding traffic sources | Per analytics provider policy |
We do not collect: Social Security numbers, financial account numbers, government ID numbers, precise geolocation, biometric data, or any sensitive personal information.
4. Calculator Inputs & Outputs
This section is the most important part of our privacy policy for most users.
Every calculator on calcestimator.com operates as a client-side JavaScript application. This means:
- When you enter your weight, your location, your health conditions, or your financial situation into any of our calculators, that information stays in your browser's memory
- No form submission occurs — your inputs are not sent over the internet to any server
- When you close the browser tab or navigate away, the data is gone — it is never stored anywhere
- The results you see are generated locally on your device, not retrieved from our servers
This architecture was a deliberate choice. Calculator tools in categories like medical dosing, health conditions, and dental costs involve sensitive personal information. We designed our tools so that this data never leaves your device.
Technical note: You can verify this by opening your browser's developer tools, going to the Network tab, and observing that no data is transmitted when you interact with our calculators. All computation occurs via in-page JavaScript with no external API calls for calculation purposes.
5. Cookies & Tracking
calcestimator.com may display third-party advertisements through services such as Google AdSense. These advertising partners may set cookies or use similar technologies to serve ads, measure ad performance, and help prevent fraud. Google's use of advertising cookies enables it and its partners to serve ads based on your visits to this site and other sites on the Internet.
You can opt out of personalized advertising by visiting Google Ads Settings or aboutads.info.
If we use privacy-focused analytics (such as Plausible or Fathom), those tools are configured to collect only aggregate, anonymized usage statistics and not to share data with advertising networks for targeting purposes.
We do not use Meta Pixel or other social-media advertising trackers.
Our site uses Google Fonts for typography. Google Fonts requests are made to Google's servers to load font files. Google's privacy policy governs any data Google may collect from these requests. If you prefer to avoid this, you can disable web fonts in your browser settings.
6. Third-Party Services
We do not sell, rent, lease, or otherwise share your personal information with third parties for their own marketing purposes.
Service Providers
Like all websites, we use basic web infrastructure services (web hosting, CDN). These providers may process server log data as described in Section 2. We select providers that maintain appropriate data protection standards.
Advertising Partners
We may display advertisements served by third-party networks such as Google AdSense. These partners operate under their own privacy policies. Google's advertising policies and privacy practices are described at policies.google.com/privacy. We do not share calculator inputs or results with advertising partners.
No Data Brokers
We do not sell data to or purchase data from data brokers under any circumstances.
7. Children's Privacy
calcestimator.com is not directed to children under the age of 13. We do not knowingly collect personal information from children under 13. If you believe a child under 13 has provided us with personal information, please contact us at [email protected] and we will promptly delete it.
Some of our calculators — particularly those involving medication dosing — include guidance relevant to children's health. This content is directed at parents and caregivers, not at children themselves.
8. Your Rights
Because we do not collect personal information in meaningful amounts, most data subject rights requests are not applicable in practice. However, we respect your rights under applicable privacy laws:
- Right to access: You may request information about any personal data we hold about you
- Right to deletion: You may request deletion of any personal data we hold about you
- Right to correction: You may request correction of inaccurate personal data
- Right to opt out: You may opt out of any data collection we conduct
To exercise any of these rights, contact us at [email protected]. We will respond within 30 days. Because we do not store calculator inputs or outputs, there is typically no personal data to retrieve or delete beyond server log entries, which are purged within 30 days regardless.
California residents may have additional rights under the CCPA. EU/UK residents may have additional rights under GDPR/UK GDPR. We honor these rights for all users regardless of location.
9. Security
We implement appropriate technical and organizational measures to protect the limited data we do process. Our site uses HTTPS encryption for all connections. Server logs are stored securely and purged on a rolling 30-day basis.
Because our calculators process all inputs locally in your browser and transmit nothing to our servers, the primary security responsibility for your calculator inputs lies with your own device and browser security — not with our infrastructure.
10. Changes to This Policy
We may update this Privacy Policy from time to time. When we do, we will update the "Last updated" date at the top of this page. If we make material changes to how we handle personal information, we will make reasonable efforts to communicate those changes prominently.
Your continued use of the Site following any changes constitutes your acceptance of the updated policy.
11. Contact
For privacy-related inquiries, data subject requests, or questions about this policy, contact us at:
calcestimator.com
Email: [email protected]
Response time: within 5 business days for general inquiries; within 30 days for formal data subject requests