How to Calculate Carpet
What is Carpet?
A carpet calculator determines how much carpet is needed for a room, including an allowance for wastage from cuts and seams. Carpet is typically sold by the linear metre in widths of 3m, 3.66m, or 4m.
Formula
Step-by-Step Guide
- 1Calculate room area = Length × Width
- 2Add 10–15% for wastage and pattern matching
- 3Consider carpet width: standard rolls are 3m, 3.66m, or 4m wide
- 4Irregular rooms: divide into rectangles, sum areas, add wastage
Worked Examples
Frequently Asked Questions
What is Carpet?
A carpet calculator determines how much carpet is needed for a room, including an allowance for wastage from cuts and seams. Carpet is typically sold by the linear metre in widths of 3m, 3
How accurate is the Carpet calculator?
The calculator uses the standard published formula for carpet. Results are accurate to the precision of the inputs you provide. For financial, medical, or legal decisions, always verify with a qualified professional.
What units does the Carpet calculator use?
This calculator works with inches, percentages, watts. You can enter values in the units shown — the calculator handles all conversions internally.
What formula does the Carpet calculator use?
The core formula is: Calculate room area = Length × Width. Each step in the calculation is shown so you can verify the result manually.
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