Flooring Calculator — ft, sqft to boxes, planks, cost

Dimensions in ft, in · Boxes & planks · Underlayment · Transitions · Cost estimate
NWFA / NALFA
Switch to Metric version →

How to use this calculator

Enter room dimensions in feet, inches, and fractions. Choose the room shape (rectangle, L-shape, or direct area in ft²), select your flooring type and plank size. Results update instantly with box count, plank count, and optional underlayment and transition strips.

Flooring types — Laminate, Engineered hardwood, Solid hardwood, Vinyl plank (LVP), Bamboo.
Box coverage — typically ~20 ft²/box, adjustable.
Underlayment — rolls at 100 ft²/roll.
Transition strips — T-molding, reducer, end cap for doorways.

~20 ft²/box typical 10% waste standard Stagger ≥ 6" LVP waterproof
Room Shape & Dimensions
ft in
ft in
Flooring Settings
ft²/box
Check your product label. Typical: 18–24 ft²/box
5% simple room · 10% typical · 15% diagonal/complex
%
Floor Plan Preview
Floor Plan — Plank Layout 15 ft 12 ft
Optional sections:
Underlayment
Foam or felt underlayment rolls. 100 ft² per roll. Required for laminate on concrete; recommended for all floating floors.
Transition Strips
$Cost Estimate
$
$
$
Results
Flooring
Boxes Needed
boxes
Total Planks
planks
Area
ft²
Coverage (+waste)
ft²

Saved Calculations

TimeShapeArea ft²TypeBoxesPlanksUnderlayTrans.Total
No saved calculations

How to Calculate Flooring Material

This flooring calculator estimates the number of boxes and planks needed for laminate, engineered hardwood, solid hardwood, vinyl plank (LVP), or bamboo flooring. Enter room dimensions in feet, inches, and fractions for rectangular, L-shaped, or custom area rooms. Select the plank size, box coverage, and installation pattern to get accurate material estimates including waste.

Box Coverage

Most flooring boxes cover 18–24 ft². Check the product label for exact coverage. The calculator rounds up to whole boxes and adds your waste allowance (typically 10%). Staggered and random patterns require the same amount of material but different cutting approaches.

Underlayment

Foam or felt underlayment is required for laminate flooring on concrete subfloors and recommended for all floating installations. Standard rolls cover 100 ft² with a built-in moisture barrier. Overlap seams by 6 inches.

Transition Strips

T-molding connects same-height floors, reducers bridge different heights, and end caps finish exposed edges. Count each doorway and room transition to determine the number of strips needed.

Misha Noyr, M.Eng.

Misha Noyr, M.Eng.

Civil Engineer · 15+ yrs · structural design, geotechnics. Full bio →