Contact
Contact Required Materials
Get in touch to report an issue, suggest a calculator, or ask a question about the site.
How to contact us
If you have spotted an issue with a calculator, found a broken page, or want to suggest a new estimator, please contact us using the contact details or form provided on the website.
When getting in touch, it helps to include the page URL, the measurements you used, and a short description of the issue so it can be checked more quickly.
What to include
To help us investigate efficiently, include the calculator name, the page link, the figures you entered, and the result you expected to see. Screenshots are also useful when reporting layout or display problems.