OhMyCalc

Carpet Calculator

Calculate carpet area needed for a room including waste allowance. Enter room dimensions and waste percentage.

How to Use the Carpet Calculator

  1. Measure and enter the room length in meters.
  2. Enter the room width in meters.
  3. Set the waste percentage (5-10% recommended).
  4. Click Calculate to see the total carpet area needed.

クイックリファレンス

変換元変換先
Small bedroom (9 m²)~10 m² with waste
Living room (20 m²)~22 m² with waste
Large room (35 m²)~39 m² with waste
5% wasteSimple rectangular room
10% wasteL-shaped or complex room
15% wastePatterned carpet

使用例

計算式

Room area = Length × Width. Carpet needed = Room area × (1 + Waste% / 100).

よくある質問

How much waste should I allow?
Typically 5-10% for simple rooms, up to 15% for rooms with complex shapes or patterned carpet.
Does this account for seams?
This gives total area needed. For seam planning, consult your carpet installer.
Is it free?
Yes, all calculators are completely free.