Quick lookup
Flooring needed for common room sizes (10% waste included)
Quick reference for the most-searched room sizes. Box coverage shown for vinyl plank (20 sq ft / box); LVP, laminate, and hardwood are similar. Add another 5% for diagonal or herringbone layouts.
| Room size | Sq ft | + 10% waste | Vinyl boxes | Hardwood boxes | Est. cost (LVP) |
|---|---|---|---|---|---|
| 8 × 10 ft | 80 | 88 | 5 | 5 | $265 |
| 10 × 10 ft (bedroom) | 100 | 110 | 6 | 6 | $330 |
| 10 × 12 ft | 120 | 132 | 7 | 7 | $396 |
| 12 × 12 ft (standard bedroom) | 144 | 158 | 8 | 8 | $475 |
| 12 × 14 ft | 168 | 185 | 10 | 10 | $555 |
| 14 × 16 ft (living) | 224 | 246 | 13 | 13 | $740 |
| 16 × 20 ft (large living) | 320 | 352 | 18 | 18 | $1,055 |
| 20 × 24 ft (open concept) | 480 | 528 | 27 | 27 | $1,585 |
Engineered hardwood boxes also typically cover 20 sq ft each. Solid hardwood boxes are smaller (16-18 sq ft) so add 10-15% to box count. Always buy 1 extra box for future repairs.
Quick answer
How much flooring do I need?
The math is simple but rarely done right: area × waste factor ÷ sq ft per box, rounded up. The errors come from skipping the waste factor, using the labeled box size instead of the actual coverage, or forgetting that diagonal and herringbone patterns waste 50% more material.
Our flooring calculator does all of it. Enter your room dimensions, pick your flooring type (with realistic per-box coverage built in), and you get exact box counts and total cost. Supports rectangular and L-shaped rooms. Switches between imperial and metric.
The math
The formula explained
Step 1: Calculate net area
Rectangle: length × width. L-shape: split into two rectangles and add. For odd shapes, divide into rectangles and triangles, calculate each, and sum.
Step 2: Add waste factor
Industry standard is 10% for straight installations and 15% for diagonal or herringbone patterns. Bump to 20% for rooms with lots of cuts (multiple closets, irregular corners).
Step 3: Divide by box coverage and round up
Each flooring type has a standard box size. Vinyl plank and laminate boxes typically cover 22 sq ft. Hardwood is around 20. Tile varies but 15 sq ft is common. Always round up to the next full box.
Choose your material
Flooring type comparison
| Type | Best for + cost | |
|---|---|---|
| Vinyl plank / LVT | Bathroom, kitchen, basement | $2–4/sq ft. Waterproof, DIY-friendly |
| Laminate | Living rooms, bedrooms | $1–3/sq ft. Cheapest, not water-friendly |
| Hardwood (solid) | Main living spaces | $4–8/sq ft. Refinishable, premium look |
| Engineered wood | Basements, condos | $3–6/sq ft. More stable than solid |
| Ceramic / porcelain tile | Bathroom, entryway, kitchen | $2–10/sq ft. Hard, cold, durable |
| Carpet | Bedrooms, family rooms | $1–4/sq ft. Cozy but harder to clean |
Use cases
Common rooms and how much flooring they need
Small bedroom (10' × 10')
100 sq ft + 10% waste = 110 sq ft. 5 boxes of vinyl plank.
Standard bedroom (12' × 12')
144 sq ft + 10% = 159 sq ft. 8 boxes of vinyl plank.
Large bedroom (15' × 14')
210 sq ft + 10% = 231 sq ft. 11 boxes.
Living room (20' × 15')
300 sq ft + 10% = 330 sq ft. 15 boxes.
Open concept (35' × 20' L-shape)
700 sq ft + 10% = 770 sq ft. 35 boxes.
Bathroom (8' × 6')
48 sq ft + 15% = 56 sq ft. 4 boxes of 15 sq ft tile.
Save money and headaches
Pro tips
- Buy an extra box. Keep it in storage for future repairs — colors can be discontinued or shift between dye lots.
- Mix from multiple boxes during installation to avoid pattern repetition or color banding.
- Diagonal patterns can change room appearance dramatically but use 15% waste minimum.
- Vinyl plank in narrow rooms looks better installed perpendicular to the long wall, but make sure manufacturer allows it.
- Boxes are usually labeled in sq ft, but actual coverage can be 5% less — read the fine print.
- Acclimate flooring in the room for 48 hours before installation. Helps prevent warping after install.
Returns are easy, second trips are not
Related calculators
Flooring is usually the last step of a room remodel. These get you to the finish line.
Last reviewed: · Methodology based on US building code standards, contractor pricing surveys, and manufacturer specifications.