Editorial Policy

Pebble Calculator exists to give accurate, practical answers. This policy explains how our pages are made.

Independence

Our calculators and guides are not paid for by manufacturers, contractors or service providers. If we ever include a sponsored link or an affiliate link, it will be clearly labelled, and it will never change a calculator's result.

How pages are produced

We use software, including AI tools, to help research, draft and test our pages. Every formula is checked against the published sources cited on the page and covered by automated tests before it goes live. Pages on money, legal or health topics are reviewed by our editor before publishing.

Sources

We rely on primary and authoritative sources: manufacturers, codes and standards, government agencies, and universities. Each page lists the sources it relies on.

Accuracy and corrections

If you find a mistake, please contact us. Confirmed errors are corrected promptly and the page's last-updated date is changed.

Not professional advice

Our results are estimates for planning. For structural work, electrical and mechanical sizing, septic design, taxes, legal or medical decisions, confirm with a qualified professional and your local authority.