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Legal

Terms of use

Effective 5 October 2026

The short version: use the site fairly, treat the calculators as estimates, and rely on written agreements for anything you buy.

1. What these terms cover

2. Calculators and models are estimates

3. Content on this site

4. Fair use of the site

6. Liability

7. Privacy

8. Law and disputes

9. Changes and contact

See also: Privacy notice · Terms of use