Last updated: 2026-10-04
MaterialMath ("we", "us") operates this website. This policy explains what information is collected when you use it.
Calculator inputs
All calculations run in your browser. The numbers you type are not sent to or stored on our servers. They may appear in the page address (URL) so that you can bookmark or share a result.
Cookies and advertising
We use third-party vendors, including Google, to serve ads on this site. Third-party vendors, including Google, use cookies to serve ads based on a user's prior visits to this website or other websites.
Google's use of advertising cookies enables it and its partners to serve ads to you based on your visit to this site and/or other sites on the Internet. You may opt out of personalized advertising by visiting Google Ads Settings. You can also opt out of some third-party vendors' use of cookies for personalized advertising at www.aboutads.info.
For more on how Google uses data, see How Google uses information from sites or apps that use its services.
Visitors in the European Economic Area, the UK and Switzerland are shown a consent message before personalized ads or non-essential cookies are used, and can change their choice at any time.
Analytics
We may use privacy-respecting analytics (such as Google Analytics) to understand which pages are used, so we can improve them. This collects information such as pages visited, approximate location, device type and referring site. It does not include your calculator inputs.
Children
This site is not directed at children under 13, and we do not knowingly collect personal information from them.
Your rights
Depending on where you live (for example under the GDPR or the CCPA/CPRA), you may have the right to access, correct or delete personal data, or to opt out of its sale or sharing. Because we do not hold personal data about visitors ourselves, most requests are best directed to the vendors above, but you can always contact us at hello@materialmath.net.
Changes
We may update this policy from time to time. The date at the top shows when it was last changed.