Terms of use

By using wattscalc.com you agree to these terms. If you do not agree, do not use the calculator. WattsCalc grants you a limited, revocable, non-exclusive license to use the site for personal and job-site reference, including saving it as a home-screen app. You may not scrape the charts to resell them as a competing paid product, wrap the site in another app that pretends to be WattsCalc, or remove the attribution and disclaimer.

The calculator and charts are provided free of charge, supported by advertising when AdSense is active. Features labelled as coming soon, including any future Pro tools, are not part of this agreement until we publish separate terms. We may change the site, take it offline, or update constants if a manufacturer publishes a correction. Continued use after a change is acceptance of the new terms. The current page is the source of truth.

You are responsible for how you apply the numbers. WattsCalc is not your employer, your engineer of record, or your electrical contractor license. You must follow the NEC and local code, use PPE, and verify bends on the bender you actually own. See the disclaimer for the full limitation of liability. Nothing on this site is professional engineering, legal, or safety advice.

Intellectual property: the WattsCalc name, layout, original diagrams, and copy belong to the site operator. Klein Tools charts and the NEC remain the property of their owners; we reference publicly taught constants. You may not copy the site wholesale. Linking to the calculator from a forum post or apprenticeship handout is welcome.

Governing law: these terms are governed by the laws of the United States and the state in which the operator resides, without regard to conflict-of-law rules. If a section is unenforceable, the rest remains. Questions: hello@any1tan.com.