The short version
The calculators run entirely in your browser. Nothing you type into a tool is collected, stored on a server, or sent to us. There are no accounts and no sign up.
Information we collect
We do not ask for or store personal information such as your name, email, or school. The numbers you enter into a calculator stay on your screen and are gone when you close the page.
What your browser stores
To make the tools nicer to use, your browser keeps two small settings on your own device: your light or dark theme choice, and any custom grading scale you set. This stays on your device, is never sent to us, and you can remove it any time by clearing your browser's site data.
Cookies and advertising
This site may show ads served by Google, through Google AdSense. Google and its partners may use cookies to serve ads based on your visits to this and other sites. You can turn off personalized advertising in your Google Ads settings, and manage choices from other providers at aboutads.info. How Google uses cookies in advertising is described in Google's advertising policy.
Analytics
We may use a privacy-friendly analytics tool to count visits in a general way, such as which pages are viewed and the country and device type. This data is aggregated and is not used to identify you.
Links to other sites
Some pages link to other websites. Once you follow a link, this policy no longer applies, and we are not responsible for how those sites handle your data.
Children
The tools are for general school use and do not knowingly collect personal information from anyone, including children.
Your choices
Because we do not collect personal data, there is little to request. You stay in control through your browser settings and the advertising links above, which let you clear stored settings and limit ad personalization.
Changes to this policy
We may update this policy as the site grows. The date at the top always shows the most recent version.
Contact
Questions about this policy? Reach us through the contact page.