Formula
Required coverage = length × width × (1 + waste percentage). Packages are always rounded up to whole units.
DIY & HOME PROJECTS
Flooring Calculator
Estimate floor area, waste, packages and material cost.
CALCULATOR GUIDE
How to use the Flooring Calculator
Calculate flooring area, waste allowance, package count and estimated material cost for rectangular rooms.
Worked example
A 15 × 12 ft room is 180 ft²; with 10% waste, plan for 198 ft² before rounding to packages.
Assumptions and limits
Alcoves, stairs, diagonal layouts, pattern matching and damaged boards may require additional material.
Frequently asked questions
How much flooring waste should I add?
About 5–10% is common for straight layouts; diagonal or patterned installations may need more.
Why are packages rounded up?
Flooring is normally sold in complete packages, so partial package results must be rounded up.
How this calculator works
Enter your known values and select Calculate result. Review units and inputs before relying on the planning estimate.
Actual quantities, prices and requirements can vary. Confirm critical work with a supplier or qualified professional.