What are cookies?
Cookies are small text files that a website places on your device to remember information about your visit. Similar technologies include browser localStorage and pixels. Calculator Matters (calculatormatters.com) uses a small number of cookies and localStorage to make the site work, remember your preferences, and (on some pages) display advertising.
Categories of cookies we use
| Category | Purpose | Set by |
|---|---|---|
| Strictly necessary | Core functionality and security during your visit. | Calculator Matters |
| Preferences | Remembering your theme (light/dark/auto) and sidebar state via localStorage. This stays on your device. | Calculator Matters |
| Analytics | Understanding which pages are popular, using aggregated and anonymised data only. | Privacy-respecting analytics provider (if enabled) |
| Advertising | Serving and measuring ads, and (where permitted) limiting how often you see the same ad and personalising ads. | Google AdSense and approved partners |
Calculator inputs stay on your device
The numbers you type into a calculator are processed in your browser and are not stored in a cookie or sent to our servers. Cookies are never used to capture your specific calculator inputs.
Advertising and Google AdSense
On pages that show ads, third-party vendors — including Google — use cookies to serve ads based on your prior visits to this and other websites. Google's use of advertising cookies (including for personalised advertising) enables it and its partners to serve ads to you. You can learn more in Google's advertising technologies and privacy policy. See also our Advertising Disclosure.
Third-party cookies
Besides advertising, some pages may load content from third parties (for example, fonts or analytics scripts). Those providers may set their own cookies under their own policies, which we do not control.
How to manage or opt out
- Adjust or delete cookies any time in your browser settings, or browse in a private/incognito window.
- Opt out of personalised Google ads at Google Ads Settings.
- Opt out across many vendors at aboutads.info and Your Online Choices (EU).
Blocking cookies or clearing localStorage may reset preferences such as your theme, but the calculators will still work.
Your privacy rights
Depending on where you live, you may have rights over how your data is used — see Your Privacy Rights (GDPR & CCPA) and our Privacy Policy.
Changes and contact
We may update this Cookie Policy from time to time; the date above shows the latest revision. Questions can be sent via our contact page.