Terms of use

Effective date: 2026-07-25. These starter terms are not a substitute for legal review.

Educational estimates

The calculators and content are provided for general informational and preliminary planning purposes. Results may be incomplete or inaccurate for a particular property, product, contract, code, utility, lender, or tax situation.

No professional relationship

Use does not create a contractor, engineer, architect, surveyor, electrician, plumber, financial adviser, lender, attorney, or tax-professional relationship.

User responsibility

You are responsible for verifying dimensions, product specifications, prices, taxes, utility locations, permits, structural design, safety procedures, contracts, financing terms, and legal requirements before acting.

Intellectual property

The site’s original design, content, branding, and compiled calculator presentation are protected by applicable law. The accompanying source starter is licensed under the included MIT license, subject to third-party service terms.

Availability

The site may change, suspend, or remove calculators without notice. No warranty is made that the service will be uninterrupted or error-free.

Limitation

To the maximum extent permitted by law, the site owner disclaims warranties and liability arising from use of estimates or reliance on website content.