Privacy Policy
Last updated: 2026
The short version
Our calculators run entirely inside your browser. The numbers you type into them are never sent to us and we never see them. We do not ask you to create an account, and we have no way to identify you personally from using this site.
What we do not collect
- We do not ask for your name, address, phone number or payment details.
- We do not store the measurements, quantities or prices you enter into the calculators.
- We do not sell personal data to anyone.
Advertising
This site is supported by third-party advertising. Advertising networks, including Google AdSense, may use cookies and similar technologies to serve ads based on your 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 can opt out of personalised advertising by visiting Google Ads Settings, or opt out of third-party vendor cookies at aboutads.info. For more information on how Google uses data, see Google's partner sites policy.
Analytics
We use privacy-respecting analytics to understand which pages are useful. Aggregate, non-identifying information such as page views, referring websites and country may be recorded. This data cannot be used to identify you.
Affiliate links
Some links on this site are affiliate links. If you click one and make a purchase, we may earn a commission at no additional cost to you. Affiliate partners may set their own cookies when you click through to their site, governed by their own privacy policies.
Your rights
If you are in the European Economic Area, the United Kingdom, or a jurisdiction with similar laws, you have the right to access, correct, delete or restrict the processing of your personal data, and the right to object to processing. Because we do not collect personal data directly, most requests of this kind are best directed to the advertising networks listed above. You may still contact us and we will help where we can.
Children
This site is not directed at children under 13 and we do not knowingly collect data from them.
Changes
We may update this policy from time to time. The date at the top of this page reflects the most recent revision.
Contact
Questions about this policy: hello@quantitymath.com