Carpet Calculator
Result
Carpet Calculator Work out how much carpet you need for a room. Enter the room length and width, the carpet roll width, and how much wastage to allow, and this calculator gives the area to order plus how many metres of roll you'll need. — free online calculator.
Formula
- Carpet Calculator calculates its result from Length, Width, Wastage. It uses the formula Area = Length × Width; With Wastage = Area × (1 + Wastage/100). Change any input to recalculate the result instantly.
- The main inputs are Room Length, Room Width, Carpet Roll Width, Wastage. Enter them in the units and format shown in the calculator.
- Keep measurements and project assumptions consistent before comparing or combining values.
- Changing any input above recalculates the result with the same calculation engine used by this page.
Example: Carpet
- Room Length: 5
- Room Width: 4
- Carpet Roll Width: 4
- Wastage: 10
Using Length = 2, Width = 3, Wastage = 12, the calculated result is 6.72.
Sample result: Calculating…
Frequently asked questions
What does the Carpet calculate?
Carpet Calculator Work out how much carpet you need for a room. Enter the room length and width, the carpet roll width, and how much wastage to allow, and this calculator gives the area to order plus how many metres of roll you'll need. — free online calculator.
Which values should I enter?
Enter Room Length, Room Width, Carpet Roll Width, Wastage using the units and format shown beside each field.
What formula does this calculator use?
The calculator uses the following relationship: Area = Length × Width; With Wastage = Area × (1 + Wastage/100).
Why might my result differ from another source?
Results can differ when another source uses different units, rounding rules, conventions or assumptions. Compare the inputs and definitions before comparing results.
Does the result update automatically?
Yes. Changing an input updates the result using the same calculation engine shown on this page.