Waste Factor Calculator
Add a waste or overage percentage to material quantities.
How It Works
Waste = Quantity × Waste % ÷ 100. Total = Quantity + Waste.
Example
100 units at 10% waste: 10 units waste → 110 to order.
Frequently Asked Questions
What is a waste factor?
The extra material added for cuts, breakage, and mistakes — typically 5–15% of the base quantity.
When should I use this?
Apply it to any material count before ordering: tile, lumber, drywall, mulch, and more.
Does the unit matter?
No — the waste factor works on any unit, so enter whatever quantity unit you are ordering in.