Cookie Policy
Cookies are small files a website stores in your browser. Here is every category we or our partners may use, and how to switch them off.
Last updated: 5 August 2026
Essential storage
Required for the site to work. We use local storage rather than cookies for your theme preference, recent calculator searches and the dismissal state of the bookmark reminder. Nothing here identifies you.
Analytics
We may use privacy-respecting analytics to count page views and understand which calculators are most used. These measurements are aggregated and are not used to build a profile of you.
Advertising cookies
- Third-party vendors, including Google, use cookies to serve ads based on your previous visits to this website or other websites.
- Google's use of advertising cookies enables it and its partners to serve ads to you based on your visit to our site and/or other sites on the internet.
- You may opt out of personalised advertising by visiting Google Ads Settings.
Managing cookies
Every major browser lets you view, block or delete cookies and site data from its settings, usually under "Privacy" or "Site settings". Blocking cookies will not stop any calculator on this site from working, because all calculations run locally in your browser.
More information
For a fuller picture of how we handle data, read our Privacy Policy. If anything is unclear, get in touch and we will explain.