Privacy Policy

Last updated: May 9, 2026

This Privacy Policy explains how ExpertToolkit collects, uses, and protects information when you use our calculators, converters, tables, formula pages, and related tools. Our goal is to keep this policy readable, specific to how the platform works, and aligned with the trust standards we expect from a computation-first product.

1. Scope of this policy

This policy applies to ExpertToolkit pages, tools, and related services delivered through this website. It covers information collected when you browse pages, interact with tools, submit contact requests, or use features that rely on cookies or similar technologies.

2. Information we may collect

Depending on how you use the platform, we may collect:

Usage information: page visits, tool interactions, referral source, approximate device and browser information, and performance or error diagnostics.
Preference information: interface language preferences, cookie choices, and other non-account settings used to improve your experience.
Contact information you provide: information you include when you contact us, such as your name, email address, and the content of your message.
Advertising and analytics signals: information associated with ad delivery, measurement, and aggregated audience reporting where those services are enabled.

We do not ask users to create an account in order to use the core public tools on the site.

3. How we use information

We may use information we collect to:

operate, maintain, and improve the platform;
understand how users interact with tools and pages;
debug technical issues, errors, and performance problems;
respond to support, corrections, or partnership inquiries;
protect the platform against abuse, fraud, or misuse;
support advertising, measurement, and compliance obligations where applicable.

4. Cookies and similar technologies

ExpertToolkit may use cookies, local storage, and similar technologies to keep the platform functional and consistent. These may be used for:

remembering interface or consent preferences;
remembering language preferences, such as theexpert_ui_lang cookie used to keep interface language consistent without putting language codes in URLs;
measuring usage patterns and site performance;
supporting advertising and related reporting.

You can manage cookies through your browser settings. If you disable certain cookies, some features or preferences may not work as intended.

5. Advertising

We may use third-party advertising services, including services that use cookies or similar technologies to show and measure ads. Those providers may collect or receive information from your use of this site and other sites over time in accordance with their own privacy policies.

ExpertToolkit may display ads served by Google AdSense or other advertising partners. Third-party vendors, including Google, may use cookies to serve ads based on a user's prior visits to ExpertToolkit or other websites. Google's use of advertising cookies enables Google and its partners to serve ads to users based on visits to this site and other sites on the Internet.

Google advertising services may use cookies associated with Google or DoubleClick domains, including cookies sometimes described as DoubleClick or DART advertising cookies. These cookies may support ad delivery, frequency capping, fraud prevention, personalization, measurement, and reporting.

Users can manage or opt out of personalized advertising through Google Ads Settings. Users may also learn about opting out of some third-party vendors' cookies for personalized advertising through aboutads.info.

6. Analytics and diagnostics

We may use analytics and operational monitoring tools to understand traffic, identify failures, and improve page quality. These tools may collect aggregated usage information, browser details, approximate region, and technical diagnostics.

7. Third-party vendors and data collection

Third-party services used for advertising, analytics, infrastructure, security, diagnostics, or embedded functionality may collect information directly from your browser, including cookies, device and browser information, IP-derived approximate location, page URLs, referral information, and interaction or measurement signals. These providers process information according to their own privacy policies and applicable law.

We do not control every cookie or similar technology used by third-party vendors. Where advertising or analytics partners provide opt-out controls, users should review those providers' privacy notices and settings pages.

8. How long we keep information

We keep information only for as long as reasonably necessary for the purposes described in this policy, including operating the platform, resolving support requests, preventing abuse, complying with legal obligations, and maintaining business records.

9. Sharing information

We may share information in limited situations, including:

with service providers that help operate the platform;
with analytics or advertising providers where enabled;
to comply with law, regulation, or legal process;
to protect the rights, safety, reliability, or security of ExpertToolkit, our users, or the public;
as part of a business transition such as a merger, financing, or asset transfer.

10. Data security

We use reasonable administrative, technical, and organizational measures designed to protect information against unauthorized access, loss, misuse, or disclosure. No online service can guarantee absolute security, but we work to reduce risk and respond quickly to issues.

11. Children's privacy

ExpertToolkit is intended for a general audience and is not designed as a service directed specifically to young children. If you believe a child has provided personal information through the site, contact us and we will review the request.

12. Your choices and requests

Depending on your location, you may have rights or choices relating to your personal information, including requests to access, correct, or delete certain information, or to object to certain kinds of data use. We evaluate requests in light of applicable law and the limited kinds of information we actually hold.

13. Contact us

For privacy-related questions or requests, please use our Contact page or email support@experttoolkit.net.

14. Changes to this policy

We may update this Privacy Policy from time to time to reflect changes in the platform, operational practices, legal requirements, or advertising and analytics integrations. When we make material updates, we will update the date at the top of this page.