What are cookies?
Cookies are small text files a website stores in your browser. “Local storage” is a similar browser feature. They help sites remember preferences or, in some cases, understand how the site is used or show relevant advertising.
What we use today
| Name | Type | Purpose | Duration |
|---|---|---|---|
| pc-theme | Local storage (first-party) | Remembers your light/dark mode choice | Until you clear it |
| Cloudflare security cookies (e.g. __cf_bm) | Strictly necessary | Protects the site against bots and abuse, if triggered | Up to 30 minutes |
We do not use cookies to store your calculator inputs.
Advertising cookies (future)
If we enable Google AdSense, Google and its partners may set cookies to show and measure ads and, where permitted, personalise them. We will update this page and request consent where required by law before such cookies are set. You can manage personalised ads at Google Ads Settings.
How to control cookies
You can block or delete cookies and local storage in your browser settings. Blocking them will not stop our calculators from working; you may just need to choose your theme again.
Contact
Questions? Please get in touch through our contact page.