| Authorship | Calculators are written and validated by the author, The CheckedCalc editor. |
| Validation | Each calculation engine is tested against worked examples with cited sources and hand-checkable numbers before publication. |
| Use of AI | AI tools assist with drafting text and writing code. The author reviews, tests and approves everything that is published. |
| Original content | Every page has a human-supplied original element, such as a worked example, a method note or a design judgement from practice. |
| No bulk pages | Pages are briefed and checked one at a time. No pages are generated in bulk. |
| Limits of use | Results are for evaluation only and are not a substitute for review by a licensed engineer. |
| Corrections | Corrections are welcome through the contact page. Confirmed errors are fixed and the page modified date is updated. |