Free Carpet Calculator
Enter room dimensions and roll width to estimate carpet area and material requirements before you quote.
- Free to use
- No sign-up required
- Instant results
- Built for flooring projects
Results
- Room area
- 20.00 m²
- Waste allowance
- 2.00 m²
- Total carpet area
- 22.00 m²
- Carpet length from roll
- 5.50 m
Total carpet area 22.00 m² divided by 4 m roll width = 5.50 m of roll length. Room width exceeds roll width — plan for a join or wider roll.
How this calculator works
Step 1
Measure the room
Enter the longest length and widest width of the room in metres or feet.
Step 2
Select roll width
Choose 4m or 5m (or your stock width) to see whether a single drop covers the room.
Step 3
Add waste allowance
Apply a waste percentage for cuts, pattern match and fitter tolerance before ordering.
When to add more waste
- Pattern match or large repeat — add 10–15%
- Hall, stairs and landings combined — 10–15%
- Awkward rooms with many cuts — 15–20%
Why use this free calculator?
- Get instant carpet area estimates without spreadsheets or manual maths.
- Account for roll width early so joins and waste are visible at quote stage.
- Share clear quantities with customers and fitters before ordering.
Common mistakes to avoid
- Measuring only the centre of the room, missing alcoves
- Forgetting waste for joins on wide rooms
- Quoting net area without explaining waste to the customer
Why flooring retailers save calculations in FloorPilot
Free calculators are perfect for quick estimates on site or in the showroom. FloorPilot keeps room measurements, material quantities and quotes linked to each customer — so you never retype numbers into spreadsheets or quote templates.
Frequently Asked Questions
How do I calculate how much carpet I need?
Multiply room length by width for net area, add waste for cuts and pattern, then confirm against your roll width. Our free carpet calculator automates this.
Should I use 4m or 5m carpet rolls?
Use the width that covers the room with the fewest joins. Wide open-plan rooms often need 5m to avoid a seam through the main traffic path.
Is this carpet calculator free?
Yes — completely free with no registration required.
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