Flooring calculator for square feet & costs.

To calculate how many boxes of flooring you need:

1. Measure net room area: Multiply length × width to get total square footage (sq ft) or square meters (m²).
2. Add cutting waste factor: Multiply by 1.10 for standard 10% waste, or 1.15 for 15% on diagonal or herringbone layouts.
3. Divide by box coverage: Divide total square feet needed by the square feet per carton (printed on the packaging label at stores like Home Depot or Lowe's).
4. Round up to the nearest whole box: Apply the ceiling formula ⌈(Net Area × 1.10) ÷ Box Coverage⌉. For example, a 150 sq ft room with 10% waste requires 165 sq ft. If boxes cover 20 sq ft each, 165 ÷ 20 = 8.25, meaning you need 9 boxes (180 sq ft total, with 15 sq ft leftover buffer).

Laminate flooring is typically packaged in boxes covering 18 to 22 sq ft (approx. 1.6 to 2.0 m²) per carton. To determine how many boxes of laminate flooring you need:

1. Calculate net room square footage (Length × Width).
2. Add a 10% cutting waste buffer to account for end-of-row cutoffs and board stagger requirements.
3. Divide the total required square feet by the exact box coverage indicated on your laminate product packaging.
4. Round up to the next full box. For example, a 200 sq ft room with 10% waste equals 220 sq ft. At 19.5 sq ft per box: 220 ÷ 19.5 = 11.28, which rounds up to 12 boxes of laminate flooring.

You need your room's net measured square footage plus a 10% to 15% waste allowance, rounded up to whole cartons. Quick room estimates include:

• 10×10 Room (100 sq ft): With 10% waste, you need 110 sq ft (~5 to 6 boxes).
• 12×12 Room (144 sq ft): With 10% waste, you need 158.4 sq ft (~8 boxes at 20 sq ft/box).
• 12×15 Room (180 sq ft): With 10% waste, you need 198 sq ft (~9 to 10 boxes).
• 16×20 Room (320 sq ft): With 10% waste, you need 352 sq ft (~16 to 18 boxes).

Use our free flooring calculator above to calculate your exact box count and cost in seconds.

To find out how much laminate flooring you need, measure the room length and width in feet, multiply them together to get square footage, and add 10% waste (or 15% for angled walls and hallways). Additionally, laminate floating floors require a mandatory 1/4-inch (6mm to 8mm) expansion gap around all walls, doorframes, and baseboards to allow for seasonal expansion. For a 250 sq ft area, order 275 sq ft of laminate flooring, plus corresponding underlayment and transition moldings.

To accurately measure a space for our flooring calculator:

1. Use a tape measure or laser measure: Measure from baseboard to baseboard at the longest and widest points of the room.
2. Convert inches to decimals: Record measurements in feet and decimal inches (e.g., 12 feet 6 inches = 12.5 ft, 10 feet 3 inches = 10.25 ft).
3. Include recesses: Measure doorways, closet depths, and window bays so you do not run short.
4. Multiply Length × Width: This gives net square footage (or m²), which you can enter directly into our calculator to get instant box quantities.

If your room is L-shaped, T-shaped, or has closets and hallways, use the sectional method:

1. Divide the floor plan into simple separate rectangles (e.g., Section A and Section B).
2. Measure the length and width of each rectangular section independently.
3. Multiply length × width for each section to determine individual square footages.
4. Sum all sections together to obtain total net square footage.
5. In our flooring calculator, click 'Add room' to enter each area separately—the calculator combines them automatically into a single unified order total.

In the UK, Europe, and retailers like B&Q and Wickes, flooring packages are known as packs and measured in square meters (m²), while in the US (Home Depot, Lowe's) they are called boxes and measured in square feet (sq ft).

To calculate packs needed: Packs = ⌈(Total m² × 1.10 waste) ÷ m² per pack⌉. For example, if your room measures 24 m², adding 10% waste equals 26.4 m². If each B&Q laminate pack covers 2.22 m², 26.4 ÷ 2.22 = 11.89, which rounds up to 12 packs. Our calculator supports instant switching between square feet and m².

For Luxury Vinyl Plank (LVP) and rigid core SPC/WPC click-lock flooring, add a 10% waste allowance for straight layouts or 15% for diagonal herringbone installations. Divide the gross square footage by carton coverage (commonly 18 to 24 sq ft per box at Home Depot or Lowe's) and round up to the next full box.

For sheet vinyl, rolls come in fixed 12-foot (3.66m) widths, so measure your room's widest dimensions and align roll seams away from heavy footpaths. Always preserve 1 unopened box of vinyl planks for future board replacements.

A 12×12 room measures 144 sq ft net. Adding a 10% cutting waste factor (14.4 sq ft) gives 158.4 sq ft total requirement. With boxes providing 20 sq ft each, 158.4 ÷ 20 = 7.92, which rounds up to 8 cartons (160 sq ft total purchased, with 1.6 sq ft leftover buffer).

Standard installations with square walls and straight horizontal or vertical planks require 10%. For rooms with diagonal layouts, herringbone patterns, closets, angled walls, or ceramic tiles, use 15%. Avoid 5% unless laying large sheet goods in a simple, obstacle-free rectangle.

Hardwood, laminate, and luxury vinyl planks are sold in sealed cartons. Building suppliers and retailers do not break carton seals. The tool calculates the ceiling whole box integer to ensure you do not run short mid-project.

This tool strictly estimates primary surface material. Underlayment rolls, vapor barriers, baseboards, transition moldings, adhesive, grout, and contractor labor rates must be budgeted as separate line items.