How much carpet to order from a 4 m or 5 m roll, with the fewest seams.
How this works
Carpet is cut from rolls 4 m or 5 m wide, so you pay for the full width. We try laying the roll both ways, add 10 cm at each cut for trimming, and pick the way that buys the least carpet. Each extra strip means one seam.
Questions people ask
How do I use the Carpet Calculator?
Fill in the fields, starting with “Room length”, “Room width” and “Roll width”, and change any other options that match your home. The answer, a drawing and practical tips update as you type, and the Copy link button saves your numbers in a link you can share.
Is the Carpet Calculator free?
Yes. The Carpet Calculator is free, with no sign-up, and works on phones, tablets and computers. The results are estimates to help you plan, so check with a qualified professional before structural, electrical, gas or plumbing work.