Information we collect
Automatically: IP address, browser type and version, device information, pages visited, time on page, referring website.
Provided by you: any information you send via our Contact form (name, email, message — all stored in our database; emails are optional).
Calculator inputs: values you type into a calculator are processed in your browser. We do not transmit or store the numbers you enter.
How we use your information
- To operate and improve the calculators and guides on this site.
- To analyze aggregate site traffic.
- To respond to feedback where appropriate.
- To prevent fraud, abuse and security incidents.
Information sharing
We do not sell, rent or trade personal information. We may share data with:
- Google Analytics — for traffic analysis.
- Google AdSense — for advertising (see below).
- Hosting and security providers — strictly to operate the site.
- Legal authorities — when required by law.
Cookies
We use cookies in three categories:
- Necessary — session, security, consent storage. Always on.
- Analytics — Google Analytics. Optional, opt-in.
- Advertising — Google AdSense and partners. Optional, opt-in.
You can change your choices any time via the cookie banner.
Advertising (Google AdSense)
Third-party vendors, including Google, use cookies to serve ads based on a user's prior visits to this site or other websites. Google's use of advertising cookies enables it and its partners to serve ads to our users based on their visit. You may opt out of personalized advertising by visiting Google Ads Settings.
GDPR rights (EU users)
You have the right to access, correct, delete and port your data, to object to processing, and to lodge a complaint with a supervisory authority. Contact us to exercise these rights.
CCPA rights (California users)
You have the right to know what personal information is collected, whether it is sold or disclosed (we do not sell personal information), to access your data, to request deletion, and to receive equal service if you exercise these rights.
Children's privacy (COPPA)
This website is not directed at children under 13. We do not knowingly collect information from children under 13.
Data retention
- Contact form submissions: up to 6 months.
- Analytics data: 26 months (Google Analytics default).
- Server logs: 90 days.
Security
We use HTTPS, secure hosting and reasonable safeguards. No method of transmission is 100% secure.
Changes to this policy
We may update this policy. The "Last updated" date above reflects the latest revision.
Contact us
Questions? Use our Contact page.