Privacy
The site has no account, no newsletter and no sale of your data. Calculator inputs stay in your browser and are never submitted to a server.
Advertising
This site carries advertising. Third-party vendors, including Google, use cookies to serve ads based on your previous visits to this site or to other sites.
You can turn off personalised advertising in Google Ads Settings. Declining it does not remove the ads; it removes the use of your browsing history to choose them.
Vendors other than Google can be turned off together at the industry opt-out page, which lists the companies participating in it and records your choice for each.
What Google itself does with data from this visit is set out in how Google uses information from sites that use its services.
Google is the only advertising network on this site. If another is ever added, it will be named here, with a link to its own cookie policy, before it serves anything.
Where Google’s own consent tool applies to you, it asks for consent before advertising cookies are set; the advertising script is what loads it. Whether it applies, how the request is worded and what choices it offers are Google’s to decide rather than ours; what this page can do is tell you whose tool it is and give you the way back to it. Where the tool is active for you, the button below reopens your choices.
Changed your mind? clears the consent choice recorded in this browser and shows the message again, so you can make a different one.
This policy was last updated on 2026-09-17.