Free tool
Carpet calculator
Square yards of carpet and pad, accounting for 12 ft roll width.
Inputs
Estimated materials
- Carpet to order
- 18 SY (158 SF)
- Room area
- 144 SF (16 SY)
- Pad
- 16 SY
- Tack strip
- 48 LF
- Seams
- None
Carpet comes off a fixed-width roll, so you pay for the full roll width on every drop. Rooms wider than the roll need a seam. Doesn't account for pattern match or closets. Estimate — verify before ordering.
Carpet by room size
Frequently asked
- How do you calculate carpet for a room?
- Carpet is sold off 12 ft (sometimes 15 ft) rolls, so you buy roll width × length of each drop. Add a few inches of trim at each end and convert square feet to square yards by dividing by 9.
- Why do I need more carpet than my room's square footage?
- A room that isn't a multiple of the roll width leaves an offcut you still pay for. A 13 ft wide room needs two 12 ft drops or a 15 ft roll.
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