Effective date: November 14, 2026
This Cookie Policy explains how Proportion Calculator uses cookies and similar technologies on proportioncalculator.app. It also shows you how to control them. Our calculators work fine without optional cookies, so you can turn them off and still solve every problem.
What Cookies Are
A cookie is a small text file that a website saves in your browser. Cookies help a site remember things, such as your settings, and help site owners understand how people use their pages. Similar tools include local storage, which works the same way but stays on your device.
The Cookies We Use
We group cookies into four types:
| Type | Why we use it | Can you turn it off? |
|---|---|---|
| Strictly necessary | Keeps the site secure, balances traffic and remembers your cookie choice | No, the site needs these to work |
| Preferences | Remembers settings like decimal places or your last used calculator mode, stored on your device | Yes, by clearing your browser storage |
| Analytics | Google Analytics measures visits and popular tools with anonymous statistics | Yes |
| Advertising | Google and its partners may show ads and measure how they perform | Yes |
Google Analytics Cookies
Google Analytics sets cookies with names that start with _ga. They help us count visits, see which calculators people use most and find pages that load slowly. We do not use them to identify you. You can block them with the Google Analytics opt out browser add on.
Advertising Cookies
We may show ads through Google AdSense. Third party vendors, including Google, use cookies to serve ads based on your prior visits to our site and other sites. You can turn off personalized ads at My Ad Center, or opt out of many vendors at once through aboutads.info. Read how Google uses cookies in advertising for more detail.
Your Choices
You stay in control. Here are four ways to manage cookies:
- Use our consent message. Visitors from the European Economic Area, the United Kingdom and Switzerland can accept or reject optional cookies when they first visit.
- Change your browser settings. Every major browser lets you block or delete cookies. See the help pages for Chrome, Firefox, Safari and Edge.
- Send a Global Privacy Control signal. We treat it as a request to opt out of the sale or sharing of personal information.
- Use private browsing. Your browser deletes cookies when you close the window.
Blocking cookies will not stop any calculator from working. However, you may still see ads, just ones that are not personalized.
Changes to This Policy
We will update this page if we add or remove a service that uses cookies, and we will change the effective date above.
Contact Us
Questions about cookies? Email proportioncalculator.marketing@gmail.com. For everything else about your data, read our Privacy Policy.