Last updated: October 31, 2026.
This Privacy Policy explains what information Proportion Calculator collects when you use this website, and what it does with that information. This website is a free proportion calculator for students, teachers, and parents. Most of what you do here never leaves your own browser.
How the Calculator Works
All calculations happen in your browser. The numbers you type into the proportion calculator are processed on your own device, and they are not sent to the server, stored in a database, or linked to you. No files are uploaded, and no account is needed to use the calculator. Closing the page ends the calculation, and nothing about it is kept.
Information You Provide
The only personal information this site asks for is what you choose to type into the contact form: your name, your email address, and your message. That information is used only to read your message and reply to it. It is not sold, and it is not added to a mailing list. If you do not want to share that information, you can still use the calculator without the contact form.
Cookies
This site uses cookies for basic function and security, and for analytics as described below. Examples are cookies that keep the site administrator signed in while managing the site, and cookies the caching plugin uses to serve pages quickly and reliably. The calculator itself does not need cookies to work, and it does not set advertising cookies. Your browser controls whether cookies are stored, and you can clear them at any time through your browser settings.
Analytics
This site uses Google Analytics and Microsoft Clarity to understand how visitors use the site. They use cookies and similar technologies to collect usage data, such as pages viewed and approximate device and browser information. No advertising partner collects information for ads. Calculator calculations themselves happen in your browser, and contact-form details are only used to reply.
Advertising
No Google AdSense code is present on this site. There are no advertisements on the calculator pages, and no advertising partner collects information from you through ads here.
Data Sharing
Your information is not sold or rented to anyone. Messages sent through the contact form are delivered to the site owner through the site’s hosting and email services, which is the only sharing needed for the form to work. Apart from that, the site does not share personal information with other parties.
Your Choices
You can use the calculator without providing any personal information. You can clear cookies in your browser at any time. If you sent a message through the contact form and want it deleted, ask through the Contact page and include the email address you used.
Changes to This Policy
If this policy changes, the new version will be posted on this page with a new last-updated date. Please check this page from time to time if you want to stay informed about how your information is handled.