TERMS OF USE

Use at your own risk

ProjectCalc calculators are provided for estimation and educational purposes only. They use industry-standard formulas and rules of thumb. They are not a substitute for professional engineering, licensed contractor judgment, formal load calculations (Manual J for HVAC, structural engineering for load-bearing), or local building codes.

Always verify final material quantities, electrical sizing, structural specs, and code requirements with a qualified licensed professional before purchasing materials or beginning work.

No warranty

ProjectCalc is provided "as is" without warranty of any kind, express or implied. We make no guarantees about the accuracy, completeness, or fitness for a particular purpose of any calculator output. Material prices, code requirements, and product specifications change — verify current values with your supplier or local jurisdiction before relying on a result.

Limitation of liability

To the maximum extent permitted by law, ProjectCalc and its operators are not liable for any direct, indirect, incidental, consequential, or punitive damages arising out of your use of the calculators — including but not limited to over-purchasing, under-purchasing, code violations, structural failures, or any project outcome.

Affiliate disclosure

Some links on ProjectCalc may be affiliate links to retailers (Home Depot, Lowe's, Amazon, etc.). When you click an affiliate link and make a purchase, we may earn a small commission at no extra cost to you. Our calculator outputs and FAQ content are not influenced by affiliate relationships.

Intellectual property

The ProjectCalc name, logo, and site design are owned by their respective creators. The calculator formulas themselves are public domain (industry-standard math). You're welcome to use the calculators on this site freely. Do not scrape, mirror, or republish the site as your own.

Changes to these terms

We may update these terms over time. The "last updated" date at the top reflects the most recent revision. Continued use of the site after changes constitutes acceptance.

Contact

Reach out via the GitHub repository at github.com/sabanite08/projectcalc.