Cookie policy
Last updated: 26 October 2026
What are cookies?
Cookies are small text files stored on your device when you visit a website. They help websites remember information about your visit.
Cookies we use
Strictly necessary
We use localStorage (not a cookie, but similar) to remember your cookie consent choice. This does not require consent under PECR as it is strictly necessary for the consent mechanism itself.
Analytics cookies (optional)
If you click Accept on the cookie banner, we enable Google Analytics 4, which sets cookies to measure site usage. These cookies are only set if you consent.
Google Analytics cookies used:
_ga— distinguishes users (2 years)_ga_*— session state (2 years)
Third-party cookies
When you click affiliate links to B&Q, Bark, or Amazon, you leave DIY Material Calc and visit those partners' websites. They may set their own cookies according to their own policies. We do not control these cookies.
Managing cookies
You can change your cookie preference at any time:
- Clear your browser's localStorage and revisit the site to see the cookie banner again
- Use your browser settings to block all cookies (this may affect site functionality)
- Opt out of Google Analytics: Google Analytics opt-out browser add-on
More information
For more about how we use your data, see our privacy policy.
Questions? Contact us.