Terms of Use

Last updated: 30 October 2026.

By using withcalculator.com you agree to these terms.

Estimates, not guarantees

Calculators and guides are provided for general information and planning. Results depend on the values you enter and on real-world factors such as clay body and firing. Verify results with your own tests before relying on them.

No warranty

The site is provided “as is” without warranties of any kind. To the extent permitted by law, we are not liable for losses arising from use of the site or its results.

Use of content

You may use the tools and print the test card for personal and studio use. Please don’t copy or republish the site’s content in bulk without permission.

Changes

We may update these terms; continued use means you accept the updated version.