Flooring Calculator

Standard installations need 10% waste for straight-lay patterns in rectangular rooms. Add 15% for diagonal installations with more angled cuts. Herringbone or chevron patterns need 15-20% extra. Irregular rooms with many doorways, closets, or angles need additional allowance. Professionals recommend ordering 10-15% extra for cutting mistakes, defective boards, and keeping spare pieces for future repairs.

Calculate each room separately (length × width), then add all areas together. Include hallways and closets. For continuous flooring through doorways, measure the full connected area as one project. Subtract areas for islands, fireplaces, or built-ins. Add waste percentage to total combined area, not each room individually—this provides better accuracy and may reduce overall waste when cutting boards span multiple spaces.

Box coverage is the square footage/meters per carton, printed on the box label. Laminate boxes typically cover 1.7-2.2 m² (18-24 sq ft); hardwood 1.4-2.3 m² (15-25 sq ft); luxury vinyl 1.4-2.8 m² (15-30 sq ft). Coverage varies by plank width and length—wider, longer planks often have less area per box. Always verify actual coverage before ordering as it varies significantly between products.

Flooring prices vary: Laminate USA $1-5/sq ft, UK £8-30/m², EU €10-40/m²; Hardwood USA $4-12/sq ft, UK £30-100/m²; LVP USA $2-7/sq ft, UK £15-50/m². Quality and brand significantly affect pricing. Installation adds 50-100% of material cost. Budget options exist in all categories, but mid-range products offer better durability and warranties for long-term value.

Laminate is a photo layer on fiberboard—affordable, scratch-resistant, but can't be refinished and moisture-sensitive. Hardwood is solid or engineered real wood—premium appearance, can be refinished (solid 3-5×, engineered 1-2×), but expensive and moisture-sensitive. LVP (Luxury Vinyl Plank) is waterproof vinyl—excellent for kitchens/bathrooms, durable, affordable, but not as premium-looking. Each suits different budgets and applications.

Most floating floors (laminate, engineered, LVP) require underlayment for cushioning, sound reduction, and minor subfloor leveling. Some products have attached underlayment—don't add more. Standard foam underlayment costs $0.15-0.50/sq ft; premium cork or rubber costs more but improves sound insulation. Over concrete, use moisture barrier underlayment. Nail-down hardwood doesn't need underlayment. Check manufacturer requirements—incorrect underlayment can void warranties.