Carpet Calculator
Carpet is sold by the square metre from a roll, typically 4m or 5m wide. This calculator works out exactly how much to order based on your room and the roll width.
Carpet Ordering Guide
How Carpet Is Sold
Carpet comes off a roll in one continuous piece cut to length. You order the roll width multiplied by the length of strip needed. For a 5.5m long room from a 4m roll, you order 4m wide × 5.5m long = 22 m² even though the room is smaller.
Seams and Direction
Always run carpet in the direction of natural light (towards the main window) to minimise visible seams. For a room wider than the roll, join strips with seams away from high-traffic paths. A good fitter will advise the best cutting plan.
Underlay First
Quality underlay extends carpet life by 50% and dramatically improves the feel and warmth. Use the same m² calculation for underlay. For underfloor heating, specify low-tog underlay (under 1.5 tog combined with carpet).
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