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Privacy Policy

Last Updated: October 18, 2026 · Effective Immediately

Welcome to SellerMath ("we", "our", or "us"). We provide free, client-side calculator utilities for independent e-commerce sellers. This Privacy Policy outlines how your data is treated when using our website.

1. 100% Client-Side Privacy (Zero Financial Data Stored)

All calculations, product prices, shipping amounts, item costs, and financial metrics entered into our calculator form are executed entirely within your browser using client-side JavaScript. We do not collect, transmit, store, or sell any financial numbers or shop data you input into the tools.

2. Third-Party Advertising and Cookies

We may partner with third-party advertising vendors, including Google AdSense and its affiliates, to serve ads when you visit our website. These vendors may use cookies and web beacons (such as the DoubleClick cookie) to serve advertisements based on your prior visits to this website or other websites across the Internet.

Users may opt out of personalized advertising by visiting Google's Ads Settings (https://adssettings.google.com) or via www.aboutads.info.

3. Web Hosting & Access Logs

This site is hosted via Cloudflare Pages. Cloudflare automatically collects standard connection metadata (such as IP addresses, browser user-agent strings, and request timestamps) to maintain network security, mitigate DDoS attacks, and route global CDN traffic safely.

4. Contact Us

If you have any questions or feedback regarding this policy or our privacy practices, please reach out to us at contact@sellermath.com.