Terms of Use

Permitted use

You may use the calculators and educational content for personal, educational and ordinary informational purposes.

Accuracy

We work to keep the tools accurate, but calculations depend on the equations, assumptions and inputs described on the page. We do not warrant that every result will be suitable for every purpose.

Third-party links

External references are provided to help readers inspect sources. We do not control third-party websites or their availability.

Changes

We may update the tools, content, sources and these terms as the site develops. The current version published on this page governs future use.