Terms of Service

Results are planning estimates from simple formulas and fixed assumptions. They can be wrong and are not engineering, architectural, structural or safety advice.

For load-bearing, foundation, roofing, stair or other safety-relevant work, consult a qualified professional and follow local building rules.

Always check quantities, coverage, pack sizes and densities against the manufacturer datasheet and actual site conditions before ordering.

The site is provided as is. To the extent permitted by law, we are not liable for shortages, over-purchasing, extra costs or damage resulting from use of the estimates.

Standard mathematical formulas are not owned by anyone. The original text, layout and design of this site are protected as far as the law allows; please do not copy them wholesale.

Calculator pages include space reserved for a future advertising integration. No third-party advertising network or script is currently active.

We do not guarantee that advertising will be added, appear, or generate revenue.