Methodology

CalculatorShelf does not use AI for runtime math. Calculators use deterministic JavaScript formulas, formula versioning, unit tests where available, last-reviewed dates, and a noindex policy for drafts or under-reviewed pages.

Indexation gate

A calculator should not enter the sitemap unless it has a working calculator, a specific formula, a numeric example, specific FAQs, unique metadata, related calculators, a canonical URL, a last-reviewed date, a risk-appropriate disclaimer, and tests or manual verification.

Safety-sensitive policy

Pool chemistry, electrical, structural, pet emergency, medical, tax, legal, and serious finance topics require conservative language, source/methodology notes, and human review before indexation.

How CalculatorShelf avoids low-value scale

• Every indexable calculator needs a working tool and crawlable default example.
• Pages need page-specific formulas, examples, mistakes, FAQs, and disclaimers.
• Safety-sensitive and underdeveloped pages can remain live but noindex until reviewed.
• No runtime AI is used to calculate results.