Enter your Tread Depth, Riser Height, Stair Width, and Number of Steps into the Stair Carpet Calculator, then add your Carpet Price per Sq Meter and toggle the Waste Factor to get your Total Carpet Required, Carpet Length, Area per Step, and Total Cost.
Total Carpet Required
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Carpet Length
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Total Cost
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Area per Step
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To calculate carpet for a stair runner, measure the tread depth and riser height of each step, then multiply by the number of steps. Add the stair width to get the total area. Don't forget to include a 10% waste factor for cutting and installation.
Start carpet installation from the bottom of the stairs and work your way up. This ensures proper alignment and makes it easier to stretch and secure the carpet as you progress upward.
Stair carpeting costs vary depending on carpet quality, stair dimensions, and installation complexity. Generally, expect to pay more per square meter than flat floor carpeting due to the precision cutting and labor-intensive installation required.
For a typical 12-step staircase (90cm wide), you'll need approximately 6-8 square meters of carpet. With mid-range carpet at £25/m², expect to pay £150-200 plus installation costs.
Add 10-15% waste factor when purchasing stair carpet. This accounts for cutting errors, pattern matching, and having spare material for future repairs. Complex stair designs may require up to 20% extra.
You need three key measurements: tread depth (horizontal step surface), riser height (vertical step face), stair width, and total number of steps. Measure each dimension carefully as even small errors can lead to insufficient carpet.
While you can use regular carpet for stairs, it's recommended to choose carpet specifically designed for high-traffic areas. Look for low pile, dense construction, and good backing to withstand the wear and tear of stair use.