Cookie policy

Last updated: 28 August 2026.

The core calculator does not require an account or preference cookie. BorderMath includes Google AdSense advertising technology. Google and participating advertising partners may use cookies or other local storage for advertising, measurement, fraud prevention and related purposes where permitted.

For users in the UK, EEA and Switzerland, advertising choices should be collected through a Google-certified consent management platform where required. Optional advertising storage should follow the consent choice presented to you.

Essential technologies

Cloudflare may use security and delivery technologies necessary to protect and serve the website. These are distinct from optional advertising or analytics cookies.

Your choices

Where a privacy or cookie settings control is shown, you can use it to review or change optional advertising preferences. Blocking optional storage may reduce personalisation but should not prevent use of the core calculator.