Privacy Policy

The numbers you enter

The calculators run in your browser on your own device. The numbers you type in are not sent to our servers and we do not store them.

Information collected automatically

We do not ask you to create an account and we do not ask for your name, address or payment details. Like most websites, we and our service providers may receive some technical information when you visit, such as:

• Your IP address, browser type and device type
• The pages you view, the time spent on them and the site that referred you
• Your approximate location, at country level

How we use this information

We use it to keep the website running and secure, to understand which pages are useful, and to improve the calculators and lessons. We do not sell your personal information.

Cookies and browser storage

We use cookies and similar storage for a few purposes: remembering your light or dark mode choice, measuring traffic, and showing ads. You can read more on our Cookie Policy page.

Advertising and Google AdSense

This website uses Google AdSense to show advertisements. Google and other third-party vendors use cookies to serve ads based on your previous visits to this website and to other websites on the internet.

Google's use of advertising cookies enables it and its partners to serve ads to you based on your visit to this site and other sites. Third-party vendors may also use web beacons or similar technology to collect information about how ads are viewed and clicked.

You can opt out of personalized advertising by visiting Google Ads Settings at adssettings.google.com. You can also opt out of some third-party vendors that use cookies for personalized advertising at www.aboutads.info. To learn how Google uses information from sites that use its services, visit policies.google.com/technologies/partner-sites.

We do not control the cookies that third-party advertisers set, and this policy does not cover their practices. Please check the privacy policies of those vendors for details.

Visitors from the EEA, UK and Switzerland

If you visit from the European Economic Area, the United Kingdom or Switzerland, we ask for your consent before using cookies for personalized advertising, as required by law. You can change or withdraw your choice at any time, and you can also clear cookies in your browser settings.

Service providers

The website is hosted on Vercel, which processes basic request data such as IP addresses to deliver the site and keep it secure. Links on this website may lead to other sites that we do not control and are not responsible for.

Children

FactorCalculator is an educational site, but it is not directed at children under 13 and we do not knowingly collect personal information from them. If you believe a child has given us personal information, please email us and we will remove it.

Your rights

Depending on where you live, you may have the right to ask what personal data we hold about you, to correct it, or to have it deleted. California residents may also ask us not to sell or share their personal information. We do not sell it. To make a request, email us and we will reply as soon as we can.

Changes and contact

We may update this policy from time to time, and the date at the top shows when it last changed.

If you have any questions about this policy, email hello@factorcalculator.com.