FloorsCalcFree material planning tool
Carpet Calculator
Create a preliminary carpet estimate using room rectangles and a selected roll width.
Carpet calculator
Result breakdown
- Room 1
- 120 sq ft
- Combined measured area
- 120 sq ft
- Measured area in square yards
- 13.33 sq yd
- Material allowance (10%)
- 12 sq ft
- Final material area
- 132 sq ft
- Selected roll width
- 12 ft
- Estimated carpet length
- 11 ft
- Estimated roll material
- 132 sq ft
Planning estimate: actual requirements may change with roll direction, orientation, seams, pattern matching, doorways, closets, hallways, stairs, irregular shapes, and installer layout decisions.
FloorsCalc
Measurement System
Imperial
Inputs
- Room 1
- 10 ft × 12 ft
- Carpet roll width
- 12 ft
- Material allowance
- 10%
Result Breakdown
- Room 1
- 120 sq ft
- Combined measured area
- 120 sq ft
- Measured area in square yards
- 13.33 sq yd
- Material allowance (10%)
- 12 sq ft
- Final material area
- 132 sq ft
- Selected roll width
- 12 ft
- Estimated carpet roll length
- 11 ft
- Estimated roll material
- 132 sq ft
Planning estimate only.
An installer should confirm roll direction, seams, pattern matching, and layout.
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Exact calculation method
For each room, runs = ceiling(room width in feet ÷ roll width in feet). Length in feet = runs × room length. Add run lengths, apply allowance, then multiply by roll width for square feet of roll material. Internal calculations retain full precision. Estimated roll lengths and material quantities are displayed as planning values.
Worked example
A 10 ft × 12 ft room on a 12 ft roll uses one 10 ft run before allowance. At 10%, estimated carpet length is 11 ft and roll material is 132 sq ft (14.67 sq yd).
Measurement tips
Measure rooms and roll width in feet. An installer should confirm roll direction, seams, and pattern matching.
Plan for this material
Calculation method: For each room, runs = ceiling(room width ÷ roll width). Length = runs × room length. Add lengths, apply allowance, then multiply by roll width for roll material area.
Example: A 10 ft × 12 ft room on a 12 ft roll uses one 10 ft run before allowance; at 10%, estimated length is 11 ft.
Before calculating: Measure closets and alcoves separately. Ask an installer to plan seams and direction before ordering.
- Check the available roll width for the exact carpet and record the longest and widest points of each room. Room area alone does not show how many full-width runs must be cut.
- Seam locations, pile direction, pattern orientation, room shape, and whether remnants can be reused all affect the purchase length. Rotating a piece may not be acceptable even when its area appears sufficient.
- Treat this as an early strip estimate. Complex rooms, connected spaces, stairs, or patterned carpet should be professionally measured before material is ordered.
Inputs and results
Enter each rectangular area, choose Imperial or Metric, and adjust the visible material allowance. Product packaging information is optional and should come from the product box, carton, or manufacturer product page. Results separate measured area, allowance, final area, and whole purchase quantities.
Limitations and assumptions
This conservative strip method does not optimize seam placement or reuse remnants across rooms. It is not installer-grade. Allowance depends on room shape, pattern, cuts, damage, product defects, installer recommendations, and manufacturer instructions.
Use this result for planning only. Verify measurements and order quantities with the product manufacturer or qualified installer.