Privacy Policy

Last updated: February 22, 2026

markupcalculator.app ("we", "us", or "our") operates the website at markupcalculator.app. This page explains how we handle information when you use our site.

Information We Collect

The calculator itself runs entirely in your browser. We do not collect, store, or transmit any values you enter into the calculator.

Like most websites, our hosting provider may automatically collect standard server log data, including your IP address, browser type, referring URLs, and pages visited. This data is used only for security and performance monitoring.

Cookies and Advertising

We use Google AdSense to display advertisements. Google AdSense uses cookies — including the DoubleClick cookie — 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 based on your visit to our site and other sites on the Internet. You may opt out of personalized advertising by visiting Google Ads Settings.

Third-party vendors, including Google, use cookies to serve ads based on prior visits to our website or other websites. You can learn more about how Google uses data by visiting How Google uses data when you use our partners' sites or apps.

What We Do Not Do

• We do not sell your personal data.
• We do not collect email addresses or account information (the site has no accounts).
• We do not use analytics tracking (no Google Analytics).
• We do not store any calculation values you enter.

Local Storage

We store your light/dark theme preference in your browser's localStorage. This data never leaves your device and is not accessible to us or any third party.

Opting Out of Advertising Cookies

You can opt out of personalized advertising from Google and other participating companies through the following tools:

• Google Ads Settings
• Digital Advertising Alliance opt-out
• Network Advertising Initiative opt-out

Children's Privacy

This site is not directed at children under 13. We do not knowingly collect personal information from children.

Changes to This Policy

We may update this privacy policy from time to time. The "last updated" date at the top of this page will reflect any changes.

Contact

Questions about this privacy policy? Contact us using our contact form.