Terms

Terms of use

LockCalculator.com provides free screening calculators for residential door-lock decisions. Results carry no warranty of fit, cost, battery life, schedule accuracy, or security outcome. By using a result to buy hardware, cut keys, or book work, the visitor accepts responsibility for verifying measurements, installation templates, egress, and code with qualified sources.

Acceptable use

Visitors must not submit confidential project details (lock codes, key-bitting photos, addresses, account data), attempt to access other visitors’ data, automate abusive request volumes against the calculation service, or misrepresent calculator outputs as professional certification, code approval, or product endorsement. Feedback submitted through site forms may be used to correct content, as described in the privacy policy.

Intellectual property

Calculator definitions, test cases, guides, and site design are the property of the site operator unless otherwise noted. Visitors may print results and PDFs for personal, non-commercial project use. Systematic republication, scraping to replicate the calculator catalog, or framing site content as another party’s work is not permitted.

Estimates and third parties

Starting-point prices, battery ranges, and signal estimates describe typical cases, not any specific supplier, lock model, or property. Quotes, availability, compatibility, and workmanship remain between the visitor and the chosen supplier or locksmith; this site is not a party to those transactions and resolves no disputes arising from them.

Limitation of liability

To the maximum extent permitted by law, the site operator is not liable for costs, delays, lockouts, damage, or losses arising from reliance on screening outputs, including wrong hardware orders, missed prep problems, or battery depletion. The verification checklists on each calculator page exist precisely because field conditions decide outcomes, not models.

Changes

Formulas, thresholds, content, and these terms may change as standards, products, and the site evolve. The methodology page describes how calculations are built and checked. Continued use after a change takes effect constitutes acceptance.