Flooring Calculators
Measure rooms once and convert square footage into cartons, boxes, tiles, carpet square yards, grout, or epoxy gallons, with the right waste factor for your layout.
Quick answer: flooring needed = room area (ft²) × (1 + waste). Use about 5–10% waste for straight plank or tile layouts and 15% or more for diagonal and herringbone patterns. Then divide by the coverage per carton and round up to whole boxes.
Flooring
Flooring Calculator
Vinyl, laminate, and hardwood floor area, cartons, and waste for any room.
Open calculator →Tile Calculator
Floor and wall tile quantity, boxes, grout, and waste.
Open calculator →Vinyl Flooring Calculator
LVP and vinyl plank cartons, sq ft, and waste from room dimensions.
Open calculator →Laminate Flooring Calculator
Laminate floor cartons, area, and waste for DIY installs.
Open calculator →Hardwood Flooring Calculator
Hardwood flooring sq ft, cartons, and waste for solid and engineered wood.
Open calculator →Carpet Calculator
Carpet square feet, rolls to order, and linear feet from room size and roll dimensions.
Open calculator →Epoxy Calculator
Gallons of epoxy for floor coatings by mils and resin pours or river tables by volume.
Open calculator →Tile Grout Calculator
Grout bags and pounds from tile area, joint spacing, and waste.
Open calculator →Floor Area Calculator
Room floor area in sq ft, sq yd, and square meters from length and width.
Open calculator →Flooring Cost Calculator
Flooring material, labor, underlayment, and total project cost per sq ft.
Open calculator →Measuring a room for flooring
- Measure length and width at the widest points, to the nearest inch.
- Split L-shaped or irregular rooms into rectangles and add the areas.
- Include closets and areas under appliances that will receive flooring.
- Add waste for cuts, then round up to full cartons, and keep one spare carton for future repairs.
Waste by layout
Straight-lay vinyl plank and laminate in a rectangular room typically need 5–10% extra. Tile needs about 10%, diagonal layouts about 15%, and herringbone or chevron 15–20%. Carpet is sold by the square yard from 12 ft wide rolls, so seam placement can increase waste.
Recommended flooring waste factors
| Material / layout | Typical waste |
|---|---|
| Vinyl plank / laminate, straight | 5–10% |
| Hardwood, straight | 7–10% |
| Tile, straight grid | 10% |
| Tile, diagonal | 15% |
| Herringbone / chevron | 15–20% |
Frequently asked questions
How do I calculate how much flooring I need?
Multiply room length by width for square feet, add 5–10% waste (more for diagonal patterns), and divide by the square feet per carton. A 12 × 15 ft room is 180 ft²; with 10% waste that is 198 ft², or 9 cartons of 22 ft².
How many square feet are in a square yard of carpet?
One square yard equals 9 square feet. Divide room square footage by 9 to get square yards, then allow extra for seams and the 12 ft roll width.
How much extra tile should I buy?
Buy about 10% extra for a straight layout and 15% for diagonal layouts, plus a few spare tiles from the same lot for future repairs.