Terms of use

Use

Content and tools are for education only. You are responsible for your decisions and for all results of using the information.

No warranty

We try to keep formulas correct but do not guarantee accuracy, completeness or fitness for any purpose, and we are not liable for loss arising from use of the tools.

External links and affiliates

The site may link to external sites we do not control. See How we make money.

Changes

We may change these terms. Continued use means you accept the changed terms.

Last updated 2026-10-05