Cookie Policy
Last Updated: July 20, 2026
This Cookie Policy explains how PercentageCalculator.dev uses cookies and similar tracking technologies when you visit our website. It explains what these technologies are, why we use them, and your rights to control our use of them.
1. What Are Cookies?
Cookies are small data files that are placed on your computer or mobile device when you visit a website. Cookies are widely used by website owners to make their websites work, or to work more efficiently, as well as to provide reporting information.
- First-Party Cookies: Cookies set directly by us (or services running on our domain).
- Third-Party Cookies: Cookies set by third-party features or services integrated into our site (such as web analytics).
2. Why Do We Use Cookies?
We use cookies for two primary purposes:
- Necessary / Essential Cookies: Required for basic site functions, specifically remembering your cookie privacy preferences so you aren't asked every time you visit.
- Performance & Analytics Cookies: Placed by Google Analytics (GA4) to help us understand how visitors navigate our site, which tools are used most frequently, and where page loading errors occur. All analytics data is collected in aggregate and pseudonymous form.
Note: Our calculation tools run entirely in your browser using local JavaScript. No cookies are used to store or log your calculation numbers or inputs.
3. Cookies Used on PercentageCalculator.dev
| Cookie Name | Provider | Purpose | Type | Expiration |
|---|---|---|---|---|
| cookieyes-consent | CookieYes | Stores your cookie consent preferences for our site. | Essential | 1 Year |
| _ga | Google Analytics | Used to distinguish unique users by assigning a randomly generated number as a client identifier. | Analytics | 2 Years |
| _ga_<container-id> | Google Analytics | Used to persist session state and maintain traffic performance data. | Analytics | 2 Years |
4. How Can You Control Cookies?
You have the right to decide whether to accept or reject non-essential analytics cookies.
A. Cookie Consent Banner (CookieYes)
When you first visit PercentageCalculator.dev, you are presented with a consent banner powered by CookieYes. You can choose to accept or decline performance/analytics cookies. You can change your preferences at any time by clicking the CookieYes widget or "Cookie Settings" link in our website footer.
B. Browser Controls
Most web browsers allow you to manage or block cookies through their settings. To learn more about how to manage cookies on popular browsers, visit:
C. Google Analytics Opt-Out
To permanently prevent Google Analytics from collecting data across all websites, you can install the official Google Analytics Opt-out Browser Add-on.
5. Updates to This Cookie Policy
We may update this Cookie Policy from time to time in order to reflect changes to the cookies we use or for other operational, legal, or regulatory reasons. Please re-visit this Cookie Policy regularly to stay informed about our use of cookies and related technologies.
6. Contact Information
PercentageCalculator.dev is operated as a privacy-first, client-side utility site. Because we do not process personal identifiers or store user contact databases, please refer to our main domain at https://percentagecalculator.dev for site updates and legal policies.