How to Calculate Flooring
Measure your room's length and width in feet, multiply them together, then add a waste factor for cuts and mistakes. The formula: Flooring Needed = Length × Width × (1 + Waste %).
Step-by-Step Measuring
- Measure wall to wall (not baseboard to baseboard) — flooring goes under baseboards
- Use the widest points if walls aren't perfectly straight
- For non-rectangular rooms, break into smaller rectangles and add them together
- Include closets, alcoves, and hallways
- Add your waste factor to the total
Waste Factor Guidelines
- 5%: Simple rectangular rooms
- 10%: Standard rooms with some cuts (most common)
- 15%: Complex layouts with many corners
- 20%: Diagonal or herringbone patterns
Example: 12×14 Living Room
- Area: 12 × 14 = 168 sq ft
- With 10% waste: 168 × 1.10 = 185 sq ft needed
- At 20 sq ft per box: 185 ÷ 20 = 10 boxes (round up)
- Laminate at $5/sq ft: 185 × $5 = $925 materials
Flooring Type Comparison
- Laminate: $4-14/sq ft installed. Easy DIY click-lock install. Not waterproof — avoid in bathrooms
- Vinyl Plank (LVP): $4-10/sq ft installed. Waterproof, durable, works in any room
- Hardwood: $15-30/sq ft installed. Adds home value, can be refinished. Avoid in high-moisture areas
- Tile: $5-15/sq ft installed. Best for bathrooms and kitchens. Professional install recommended
- Carpet: $3-11/sq ft installed. Comfortable underfoot but harder to clean
Buying Tips
- Most laminate and vinyl plank comes in boxes covering 20-26 sq ft — always round up
- Buy all your flooring from the same production lot to ensure consistent color
- Keep 1-2 extra boxes for future repairs — matching discontinued products is difficult
- Acclimate flooring in the room for 48 hours before installation to prevent expansion gaps
- Factor in underlayment cost ($0.25-0.75/sq ft) if not already attached to the planks