We follow the Privacy and Electronic Communications Regulations (PECR). We only use non-essential cookies if you agree to them.
Strictly necessary
| Name | Type | Purpose | Duration |
|---|---|---|---|
mm-consent | Local storage | Remembers your cookie choice | Until cleared |
Optional analytics
If you click "Accept analytics", we load Google Analytics 4 to understand which pages and calculators are used, so we can improve them. These cookies are not set unless you agree. Google Analytics is provided by Google Ireland Limited. Seehow Google uses information from sites that use its services. We don't send the figures you enter into the calculators to Google.
| Name | Provider | Purpose | Duration |
|---|---|---|---|
_ga | Google Analytics | Distinguishes unique visitors | 2 years |
_ga_<ID> | Google Analytics | Keeps track of your session | 2 years |
Changing your choice
Use the "Cookie settings" link in the footer of any page to change your choice, or clear your browser's site data for this website.