Calculate
Waste Calculator
Budget additive cutting, breakage and contingency allowances on net area.
Net area and planning allowances
Exact decimal or scientific notation; no silent rounding.
Changing a unit reinterprets the entered text; it does not convert it. Blank area is incomplete; explicit zero demand is valid. Maximum net area: 500,000 m².
Allowances applied to the original net area
Optional; blank contributes 0%.
Optional; blank contributes 0%.
Optional; blank contributes 0%.
Each allowance is 0–100%, on the exact 0.01% grid. Blank contributes 0%. Percentages are added, never compounded.
Optional procurement rounding is separate from the exact estimate and is not a physical slab quantity.
Waste Allowance Estimate
Enter an area and the inputs to see an estimate. No calculation has been made yet.
Estimate unavailable until inputs are valid.
Choose the right planning tool
Slab Calculator estimates an area-only lower bound. Waste Calculator budgets user-entered allowances. Cut-to-Size validates actual piece placements and geometric unoccupied regions; those regions must not be automatically added as allowances.
Open Cut-to-Size for actual piece nestingLinks open separate tools. Inputs are not transferred or saved; copy your summary before leaving.