Flooring Calculator
Add every room by name, enter dimensions or a known area, set box coverage and waste, and get whole boxes plus cost.
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Flooring
Flooring is bought in sealed boxes with a fixed coverage, so the estimate has two steps: total your room areas, then divide by the box and round up — with a waste allowance so cuts and pattern matching do not leave you short.
Start with the calculator
What you can calculate
- Boxes needed for one room or a whole floor of named rooms.
- Total floor area across mixed room shapes — dimension rooms and known-area rooms combine in one list.
- Estimated cost from your price per box, using the actual rounded-up box count.
Room measurement tips
- Measure the finished floor space — length and width at the floor, not at furniture height.
- Include closets you plan to floor; they are easy to forget and small closets still consume a meaningful slice of a box.
- For L-shaped rooms, split the space into two rectangles and add both — name them "Living A" and "Living B" if that helps.
- If a supplier already quoted you a room's area, use direct-area mode for that room instead of re-measuring.
Waste allowance by layout
| Layout | Typical waste |
|---|---|
| Straight lay, rectangular rooms | 5–10% |
| Plank with staggered joints | ~10% |
| Diagonal lay | ~15% |
| Herringbone / chevron | 15%+ |
Guides for flooring projects
- How to Measure a Room for Flooring — measuring technique from tape to total.
- How Much Flooring Should You Buy? — coverage, waste, rounding, and spare boxes.
- How Much Extra Material Should You Buy? — waste logic across materials.
Related calculators
- Paint Calculator — pair new floors with fresh walls.
- Concrete Calculator — for slab-on-grade thickness checks on small pads.