Privacy Policy

Last updated: October 6, 2026

Summary

Every calculator on this site runs entirely inside your web browser. The numbers you type are processed by JavaScript on your own device. They are never transmitted to us, never stored on our servers, and we never see them.

What we do not collect

We do not require an account, and we do not ask for names, email addresses, phone numbers, business details, or payment information in order to use any tool. We do not collect the values you enter into any calculator.

Analytics

We use Google Analytics to understand how visitors use the site, so we can improve which tools we build. Google Analytics may record:

• Pages viewed and the general type of device and browser
• Approximate geographic region derived from IP address
• Referring search query in anonymized form
• Aggregate page views, session counts, and approximate performance metrics

This information does not identify you personally. You can opt out using the Google Analytics opt-out browser add-on, or by enabling Do Not Track in your browser settings.

Advertising and cookies

This site displays advertising. Third-party vendors, including Google, use cookies and similar technologies to serve ads based on your prior visits to this and other websites.

• Google's use of advertising cookies enables it and its partners to serve ads to you based on your visit to this site and/or other sites on the internet.
• You may opt out of personalized advertising by visiting Google Ads Settings.
• You can opt out of third-party vendor cookies for personalized advertising at aboutads.info.

You can decline cookies in your browser settings, though some site features may not function as a result.

Affiliate links

Some pages contain affiliate links. If you click one and purchase from the third-party company, that company may use cookies to attribute the referral to us. This does not change what you pay. We mark affiliate links as required by the US Federal Trade Commission, and we do not control the content or practices of any third-party site you are redirected to.

Third-party links

Our tools and guides may link to external websites. We are not responsible for the privacy practices, content, or accuracy of any third-party website. We encourage you to review the privacy policy of any site you visit.

Children

This site is not directed at children under 13, and we do not knowingly collect personal information from them.

Data retention

Because we do not collect personal data or calculator inputs, there is no personal data for us to retain, sell, or share. Aggregated analytics data is retained by Google Analytics under Google's own policies.

Changes to this policy

We may update this page as the site changes. The date at the top always reflects the most recent revision. Material changes will be summarized here.

Contact

Questions about this policy can be sent to hello@linwt.top.