How much hardwood flooring do I need? Calculate boxes, board feet, and costs for oak, maple, hickory, walnut, and cherry. Solid and engineered options.
Room Details
10% typical for standard installs
Ready to calculate
Enter your room details for hardwood flooring estimates
Last updated March 2026 by our expert review team
Material cost only. Installation adds $3 to $8 per sq ft for professional install.
Hawkin
Certified Cost & Estimating Professional
AACE-certified estimator working with 20+ insulation companies including the two largest franchises in America.
See full profileEhsan Ghazanfari
Licensed Structural Engineer
FISE-certified structural engineer with 11+ years designing bridges, retaining walls, and foundations. MSc from Aalto University.
See full profileUpdated March 2026
How we verify our calculatorsAcclimate hardwood in the room for 3 to 5 days before installation. Stack boards with spacers so air circulates on all sides.
Solid hardwood is nailed or stapled to a plywood subfloor. Engineered hardwood can float, glue, or nail down on any subfloor including concrete.
Use our board foot calculator to estimate rough lumber pricing when comparing hardwood species.
Compare hardwood against other materials with our flooring calculator before committing to a material.
Wider planks (5 to 7 inches) show more grain and create a modern look but waste 5% more material on cuts than narrow 3-inch strips.
Always order from the same batch. Wood color varies between production runs, and mixing batches creates visible color banding across the floor.
Enter your room length and width, then select your wood species, floor type (solid or engineered), and plank width.
Adjust the waste factor. 10% is standard. Wide planks and rooms with many corners may need 12 to 15%.
Get boxes, board feet, underlayment (engineered) or cleats (solid), and a cost range for your species.
Formulas
Total Area = Room Area x (1 + Waste%)
Boxes = Total Area / Sq Ft per Box (20 solid, 24 engineered)
Board Feet = Total Area (at 3/4" thickness, 1 BF = 1 sq ft)
How many boxes for a 12x12 room?
About 8 boxes of solid (20 sq ft/box) or 7 boxes of engineered (24 sq ft/box) with 10% waste. Always round up to full boxes.
Solid vs engineered hardwood?
Solid is 3/4 inch thick real wood, nailed to plywood. Engineered is a thin real-wood veneer over plywood layers. Engineered handles moisture and concrete subfloors better.
What is Janka hardness?
The Janka scale measures how hard a wood species is. Higher numbers resist dents better. Hickory (1820) is the hardest common species. Cherry (950) is the softest.
How much does hardwood flooring cost per sq ft?
Oak runs $6 to $12, maple $7 to $13, hickory $6 to $11, walnut $10 to $18, and cherry $8 to $14 per sq ft for materials only. Installation adds $3 to $8 per sq ft.
Nail-down vs floating installation?
Nail-down is stronger and quieter, but requires a plywood subfloor. Floating (click-lock engineered) works over concrete, radiant heat, and existing floors.
How long should hardwood acclimate?
3 to 5 days minimum. Open the boxes and stack boards with spacers in the room where they will be installed. Maintain normal room temperature and humidity.
How often can hardwood be refinished?
Solid hardwood can be sanded and refinished 3 to 5 times over its lifetime. Engineered hardwood with a thick veneer (4mm+) can be refinished 1 to 2 times.
What is the best species for kitchens?
Hickory or white oak. Both score high on the Janka scale and resist dents from dropped items. Use engineered over concrete or with radiant heat.
A small bedroom with classic oak strip flooring. Solid hardwood nailed to plywood subfloor with 10% waste factor for straight layout cuts.
A large living area with engineered oak for click-lock installation. Engineered works over concrete slabs and radiant heat systems.
Premium black walnut for a rich, dark floor. Lower Janka rating (1010) is fine for bedrooms with less foot traffic than main living areas.
Full first floor in hickory, the hardest domestic species (Janka 1820). Wide 7-inch planks create a modern farmhouse look with maximum grain display.
Not acclimating wood
Hardwood needs 3 to 5 days in the room to adjust to temperature and humidity. Skipping this causes cupping, gaps, and buckling after install.
Installing solid hardwood on concrete
Solid hardwood must be nailed to a plywood subfloor. For concrete, use engineered hardwood or install a plywood subfloor system over the slab.
Choosing low-Janka species for high-traffic areas
Cherry (950) and walnut (1010) dent easily under furniture legs and dropped items. Use hickory (1820) or oak (1290) for hallways, kitchens, and living rooms.
Skipping vapor barrier on concrete
Moisture wicks up through concrete and damages engineered hardwood from below. Always install a vapor barrier or moisture-rated underlayment over concrete slabs.
Not staggering end joints by at least 6 inches
Aligned end joints create weak lines and visible patterns across the floor. Stagger joints randomly with at least 6 inches between adjacent row ends.
Important Disclaimer
These estimates are for planning purposes only. Actual costs vary by location, material availability, and project complexity. Always get at least 3 local quotes. This calculator does not replace professional advice.