Editorial Policy

Our standard

A calculator is only useful if you can trust the number. Every OrcaCalc calculator must meet these rules before it goes live:

1. Primary sources. Formulas and default values come from official or primary sources — standards bodies such as NIST, government agencies, manufacturers' published specifications, university extension services, the College Board — and are cited on the page.
2. Transparent formula. The exact formula and every assumption (default density, waste factor, grading scale) is written on the page and can be changed in the calculator where it varies.
3. Tested. Each calculator ships with automated tests comparing its output to independently hand-worked examples, including edge cases such as zero and unit conversions.
4. Human review. A second person checks the formula, example and copy before publication and on every substantive update.
5. Original writing. Our explanations are written for the page; we do not copy other calculator sites. We may use software tools to draft or check text, but a person verifies every fact and number.
6. Dated updates. The “last updated” date changes only when content or logic materially changes.

Corrections

If you find an error, contact us. Confirmed errors are fixed promptly and noted on the page when they affected results.

Independence

Advertising never influences calculator logic or recommendations. Ads are visually separated, labelled and never placed inside the calculator.