Information we collect directly
We don't offer user accounts, comments, payments, or contact forms, and we don't ask for personal information like names, phone numbers, or addresses. Values you enter into calculators are computed in your browser and never sent to UsefulBasis servers.
Logs and analytics
Our hosting provider may process standard access logs for security and operations. If we use Google Analytics 4, we may measure non-identifying events like page visits, calculator runs, and affiliate link clicks — never including your inputs or personal information.
This policy also applies to the packing subdomain (packing.usefulbasis.com), which is measured with the same Google Analytics 4 property.
We record in Google Analytics anonymous counts of when a tool is started and when a result appears. Files you upload and the text or numbers you enter are never sent.
Ads and affiliate links
We may use scripts for Google AdSense site verification and ad serving. After site approval and ad setup, Google and other ad providers may use cookies or similar technologies, with consent or opt-out where required. Purchases through affiliate links such as Coupang Partners may earn us a commission.
External sites
External sites are governed by their own privacy policies. UsefulBasis doesn't control external sites' data practices or content.
Contact
For privacy questions, use the public contact channel on our contact page. We'll update the effective date here when this policy changes.