Your privacy choices
We do not sell or share personal information for cross-context behavioural advertising. There is no advertising or personalization tracking on this site today, and the controls below stay off unless you turn them on. Your choices are stored on this device, so you will need to set them again in another browser.
Tracking categories
Required to load pages, keep the site secure and remember your cookie choices. These cannot be switched off.
Remembers calculator inputs, saved assumptions and interface preferences on your device so you do not re-enter them.
Aggregate measurement of which pages and calculators are used. Off until you allow it.
Advertising or cross-context behavioural tracking. Not currently used and off by default.
Tailoring content or suggestions to your behaviour. Not currently used and off by default.
Global Privacy Control
We honour the Global Privacy Control browser signal as a valid opt-out of sale, sharing, targeted advertising and profiling. No signal was detected from this browser.
Your stored consent record
No consent record is stored on this device yet. Only strictly necessary storage is in use.
Delete the data on this device
Calculator inputs and saved assumptions live in this browser, not in an account. Clearing them removes them permanently and cannot be undone.
To make an access, deletion or correction request, email our contact page. Details are in the Privacy Policy and the Cookie Policy.