Terms of use
Free and responsible use of calculators in this version.
Free service
Calculators are provided without signups and without a guarantee of permanent availability. Features may change or be removed.
Educational estimates
Results may include rounding or simplifying assumptions. They do not replace measurement, professional engineering or legal, tax or financial advice.
Your responsibility
Double-check inputs and verify results before making decisions that might cause physical, financial or material harm.
Content rights
The site design, explanations and files are part of this project. Rights to all resources should be verified before commercial publication.
Changes
These terms may be updated when a custom domain, verified publisher details and additional services are introduced.