Privacy policy

Last updated: April 2026

Overview

Calcinum (https://calcinum.com) is a free online calculator website. We take your privacy seriously. This policy explains what data we collect, how we use it, and your rights.

What we collect

Calculator usage

We do NOT store any numbers you enter into our calculators. All calculations run entirely in your browser using client-side JavaScript. No salary, tax, or financial data is ever sent to our servers.

Analytics

We use Google Analytics (measurement ID: G-BEKW2FECCS) to understand how visitors use our site. This collects: pages visited, time on page, device type, browser, approximate geographic location (country/region level), and referral source. Google Analytics uses cookies. You can opt out using browser settings or the Google Analytics opt-out browser add-on.

Contact form

If you submit our contact form, we collect your name, email address, and message. This data is processed by Web3Forms and delivered to us via email. We use it only to respond to your inquiry and do not share it with third parties.

We use cookies only for Google Analytics (performance/analytics cookies). We do not use advertising cookies, tracking pixels, or retargeting. No third-party ad networks operate on our site.

What we do NOT collect

Salary, income, or tax information entered into calculators
Social Security numbers or personal tax IDs
Payment information (we have no paid features)
Precise location data beyond what Google Analytics collects at the country/region level

Third-party services

Google Analytics — used for website analytics. Privacy policy
Web3Forms — used for contact form processing. Privacy policy
Hosting provider — our hosting provider may log IP addresses in server access logs as part of standard web hosting. These logs are typically retained for 30 days.

We do not use any advertising networks, social media trackers, or data brokers.

Your rights

You can disable cookies in your browser settings at any time.
You can use the Google Analytics opt-out add-on to prevent analytics tracking.
If you've submitted a contact form and want your data deleted, contact us.
EU visitors (GDPR): You have the right to access, rectify, or delete your personal data. Contact us to exercise these rights.
California visitors (CCPA): We do not sell personal information. You can request disclosure of what data we've collected by contacting us.

Children's privacy

Our site is not directed at children under 13. We do not knowingly collect personal information from children. If we learn that we have collected data from a child under 13, we will delete it promptly.

Changes to this policy

We may update this policy from time to time. The "last updated" date at the top reflects the most recent revision. Continued use of the site after changes constitutes acceptance of the updated policy.

Contact

For privacy-related questions, use our contact form.