Privacy Policy

Octa Calculator ("we," "us," or "our") operates octacalculator.com, a free calculator and reference website spanning Construction, Currency Converter, Finance, Real Estate, Health & Fitness, Mathematics, and Unit Conversion and related topics. This Privacy Policy explains what information we collect when you visit our website, how we use it, and the choices you have. By using the site, you agree to this policy.

1. Information We Collect

Information you provide

If you email us at [email protected], we receive your email address, message contents, and any information you choose to include. We use this only to respond to your inquiry.

Calculator issue reports

On supported calculator pages, the Report an issue form records the calculator page, issue type, and the description you submit. You may optionally provide steps or inputs to reproduce the issue and an email address for a reply. Normal calculator inputs are not sent automatically; only details you enter in the form are submitted. Please do not include sensitive personal, financial, health, payment, or account information.

To limit abuse, the report system derives and stores a one-way hash of a coarse network identifier (an IPv4 /24 or IPv6 /64), rather than storing the raw IP address in the issue report. Our hosting and security providers may still process IP addresses in ordinary server logs as described below.

The form is protected by Google reCAPTCHA. When you submit a report, Google processes a reCAPTCHA response and technical/browser information to help distinguish people from automated abuse. Google's Privacy Policy and Terms of Service apply.

Calculator inputs

Most calculators run in your browser. We do not require an account, and we do not ask you to submit calculation inputs to our servers to obtain a result. Optional features such as favorites or recently used tools may store data locally in your browser (localStorage) on your device.

Automatically collected information

Like most websites, our servers and hosting provider may log technical data when you visit, including IP address, browser type, device type, referring URL, pages viewed, and date/time stamps. This data helps us operate, secure, and improve the site.

2. Cookies and Similar Technologies

We and our partners may use cookies, local storage, pixels, and similar technologies to:

• Remember preferences such as light/dark theme (stored locally in your browser).
• Protect the calculator issue-report form from automated abuse through Google reCAPTCHA.
• Measure site traffic and performance.
• Serve and measure advertising, where ads are displayed.

You can control cookies through your browser settings. Blocking cookies may affect certain features or ad personalization.

3. Advertising (Including Google AdSense)

We may display third-party advertisements on Octa Calculator, including through Google AdSense or other ad networks. Third-party vendors, including Google, use cookies to serve ads based on your prior visits to this or other websites.

• Google's use of advertising cookies enables it and its partners to serve ads to you based on your visit to our site and/or other sites on the Internet.
• You may opt out of personalized advertising by visiting Google Ads Settings or aboutads.info.
• See how Google uses data from partner sites at Google's partner sites policy.

We do not control third-party advertisers' cookies or tracking technologies and encourage you to review their privacy policies.

4. How We Use Information

• Operate, maintain, and secure the website.
• Understand how visitors use our pages so we can improve calculators and content.
• Investigate calculator issue reports, improve affected pages, and respond when a reply address was provided.
• Prevent abusive or automated submissions to the issue-report form.
• Respond to emails and support requests.
• Comply with legal obligations and enforce our terms.

5. How We Share Information

We do not sell your personal information. We may share limited technical data with service providers that help us host the site, deliver ads, or analyze traffic, under contracts that limit their use of the data. We may also disclose information if required by law or to protect our rights, users, or the public.

6. Data Retention

Server logs are retained for a limited period needed for security and operations, then rotated or deleted. Calculator issue reports and emails are kept only as long as needed to investigate the report or request, improve the affected page, prevent abuse, and maintain reasonable business records.

7. Children's Privacy

Octa Calculator is not directed at children under 13, and we do not knowingly collect personal information from children. If you believe a child has provided us personal information, contact us and we will delete it.

8. International Visitors

If you access the site from outside the United States, your information may be processed in the United States or other countries where our service providers operate. Local privacy laws may give you additional rights depending on your location.

9. Your Choices

• Adjust cookie and ad personalization settings in your browser or through the links in Section 3.
• Clear localStorage in your browser to remove saved favorites or recent tools.
• Email us to ask questions about this policy or request access or deletion of information you provided directly to us. Include enough detail for us to locate the relevant email or issue report.

10. Changes to This Policy

We may update this Privacy Policy from time to time. The "Last updated" date at the top will change when we do. Continued use of the site after changes means you accept the revised policy.

11. Contact

Privacy questions: [email protected]
General contact: Contact page
Calculator corrections: Corrections Policy