About the project
About RightQty
RightQty helps people turn real project measurements into practical quantities before they visit a supplier or start work.
Useful answers, visible assumptions
Every calculator is built around a specific purchasing question. Formulas are deterministic, unit conversions are explicit, and the assumptions behind density, waste, compaction, package yield, and rounding are shown with the result.
Focused calculator collections
Calculators are grouped by genuine project intent. RightQty does not publish thin pages that repeat the same formula under different keywords, and roofing calculators are intentionally reserved for a separate specialist project.
Planning support—not professional design
RightQty estimates quantities. It does not replace local building codes, manufacturer instructions, supplier specifications, structural engineering, permits, or licensed professionals where they are required.