How to use it
- Enter the room size.
- Pick the roll width.
- Add waste for seams and pattern matching.
The formula
Drops = shorter side ÷ roll width (rounded up)
Carpet = drops × roll width × longer side ÷ 9
Worked example
| Room length | 14 ft |
| Room width | 12 ft |
| Carpet roll width | 12 ft |
| Waste / seams | 10 % |
| Price per ft² (optional) | 0 $ |
Result
| Carpet to buy | 20.5 yd² |
| Square feet | 185 ft² |
| Room area | 168 ft² |
| Widths (drops) of roll | 1 |
| Pad | 18.7 yd² |
| Material cost | $0 |
Tips before you order
- Rooms narrower than the roll width avoid seams entirely.
- Run seams away from doorways and heavy traffic paths.
Questions
How many square yards of carpet for a 12×14 room?
One 12 ft drop 14 ft long: 168 ft², or 18.7 yd², plus waste.