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HeizerDesk Flooring Calculator
Enter the room and the coverage printed on the box. This returns the square footage including cut waste and how many boxes to buy — plus the underlayment and transition strips people forget until the day of. A free flooring calculator you can use on the job: nothing to install, nothing to register.
Your numbers
Result
Boxes to buy
16
boxes
- Square footage incl. waste
- 308sq ft
- Actual floor area
- 280sq ft
- Coverage you will own
- 328sq ft
- Left overKeep it for repairs
- 48sq ft
- Underlayment rollsAt 100 sq ft per roll
- 3rolls
- Baseboard or quarter round
- 75linear ft
How this is calculated
- Floor area = length × width, plus closets and alcoves.
- With waste = area × (1 + waste %). The layout drives this far more than the room does.
- Boxes = square footage with waste ÷ coverage per box, rounded up.
- Trim = perimeter × 1.1 for mitre waste.
Before you order
- Buy it all at once and check the batch or lot number. Two production runs of the same product are often visibly different, and that difference shows up as a stripe across the floor.
- Keep the leftovers. A discontinued plank cannot be matched when a dishwasher leaks in year four.
- Floating floors need an expansion gap at every wall and a transition at every doorway — that gap is why the underlayment and trim lines are here.
- Acclimate the material in the room for 48-72 hours before laying it. Skipping this is the most common cause of buckling later.