Last updated: September 27, 2026
Grey Structure Calculator does not require an account. Calculations run in your browser. A saved estimate stays in that browser's local storage unless you copy, export, share or email it yourself.
1. Who operates this site
Grey Structure Calculator publishes construction-planning calculators and guides at greystructurecalc.com. Privacy questions and requests can be sent to contact@greystructurecalc.com.
2. What happens when you use a calculator
| Action | What happens |
|---|---|
| Calculate | Inputs are processed in your browser to display a result. |
| Save on device | The estimate is written to local storage in that browser. The site does not create an account or server record for this feature. |
| Copy or export CSV | Your browser creates copied text or a local download under your control. |
| Share | A URL containing selected calculator inputs may be created. Anyone receiving that URL can read those values. |
| Your browser or operating system handles the print workflow. |
Do not place confidential client names, addresses or commercially sensitive details into shared URLs or exported filenames.
3. Contact information
The contact form does not post information to a website database. It prepares a draft in your email application. If you send the email, your name, email address, message and any attachments are processed by your email provider and the recipient's email service.
Do not send identity documents, payment details, confidential drawings or information you are not authorized to disclose.
4. Hosting and security records
Like most websites, the hosting and network providers that deliver the site may process technical records such as IP address, request time, requested URL, browser information, response status and security events. These records support delivery, abuse prevention and troubleshooting. Their retention and international processing depend on the provider's operational and legal requirements.
5. Analytics
Analytics storage is denied by default. The Google Analytics tag is requested only after you allow Analytics in the site's privacy choices. The site's custom events exclude exact project area, entered rates, estimated cost, contact fields, message content and calculator query strings. Core Web Vitals events include the page address without query strings, page template, device category, consent state and ad state, alongside the measured performance value.
6. Advertising
The site identifies its Google AdSense publisher account, publishes an ads.txt record and includes responsive ad placements after calculators and within substantive guides. Navigation, directory, policy, contact, sitemap and error pages do not contain manual ad placements. Advertising storage, user-data and personalization signals are denied by default. The official AdSense loader is not requested by the site unless you allow Advertising; an eligible manual unit is then requested only as it approaches the viewport.
Learn how Google describes data use on partner sites at Google's partner-sites privacy page.
7. Cookies and local storage
Saved estimates use local storage, which is similar to a persistent browser preference but is not transmitted by the browser with every web request. Analytics and advertising services may use cookies or similar identifiers according to their configuration and applicable consent choices. See the Cookie Policy for the current technology table and browser controls.
8. Why information may be used
Information actually received may be used to respond to a message, correct content, investigate a calculation, maintain security, comply with law, establish or defend legal claims, and improve the site. We do not sell contact details as a mailing list.
9. Sharing
Information may be handled by hosting, network, email, security or professional service providers only as needed for their service. It may also be disclosed when reasonably required by law, legal process, safety, fraud prevention or protection of rights. A future transfer of the site may include necessary operational records subject to applicable law.
10. Retention and deletion
You control calculator records saved in local storage and can delete them through the saved-estimate controls or browser storage settings. Email correspondence is retained only as long as reasonably needed to answer, document corrections, manage disputes, maintain security or meet legal obligations. Hosting logs follow provider settings and operational needs.
Deleting a saved estimate does not remove a CSV download, printed copy, copied message or shared URL. Remove those copies separately from the device or service where you placed them. The site cannot recall a link that another person has already received. Clearing all site data also removes remembered privacy choices, so you may be asked to choose again.
11. Security
The site uses HTTPS and security-focused browser headers where supported by the host. No internet transmission or storage system is guaranteed to be perfectly secure. Avoid sending sensitive information that is not necessary for the request.
12. Your choices and rights
Use the “Privacy choices” control in every page footer to change or withdraw optional Analytics and Advertising consent. Depending on applicable law, you may also ask whether personal information about you is held and request access, correction, deletion, restriction or objection. Requests should be sent to contact@greystructurecalc.com; reasonable verification may be required.
Changing consent cannot undo a request already sent to a third party. After withdrawing consent, reload the page to start a fresh session with optional tags disabled. Use browser site-data controls to remove cookies or storage that were created earlier; changing the site's consent preference does not itself erase every third-party record.
13. Children
The site is not directed to children under 13 and does not knowingly request their personal information. A parent or guardian who believes a child sent personal information can request review and deletion.
14. External links
Guides link to official bodies and other external resources. Their privacy and security practices are controlled by those organizations. Review the destination before providing information.
15. Policy changes
This policy will be revised when site data practices materially change. The date changes only when the text or practice changes, not merely to appear current.
16. Contact
Email contact@greystructurecalc.com or use the contact page. Editorial corrections are described in the Editorial Policy.