Contact

Questions, corrections, and tool suggestions are all welcome.

A dedicated support inbox for ConstructionCalculations.net is being provisioned, and the address will be published on this page as soon as it is live. Corrections found through the review process described on the methodology page continue to be applied to every tool in the meantime.

Reporting a calculation issue

To help us reproduce and fix a suspected calculation problem quickly, please include:

• The calculator you were using (for example, "Concrete Slab Calculator — slab with waste factor")
• The exact values you entered
• The result you saw and the result you expected
• Your browser, if the problem looks like a display issue

Confirmed issues are corrected in the calculation engine and covered by a new automated test so they cannot recur silently. See our methodology page for how ConstructionCalculations.net estimators are built and verified.

What we cannot help with

ConstructionCalculations.net does not provide structural-engineering, building-code, permit, or pricing advice, and cannot interpret what an estimate means for your specific project. For consequential decisions, consult a qualified professional.