Carpet roll stock.
Measure complete strips with the specified direction and any pattern repeat.
Read the right quantitative data
Roll width, usable length and the chosen repeat or end allowance.
Check this ordering assumption
Square area can underestimate purchased length when a room needs several full-width strips.
The laying direction and permissible seams are inputs, not installation recommendations.
A worked quantity method
This illustrative set of supplied inputs demonstrates Carpet Roll Length Calculator. Replace the example measurements and product figures with your own before ordering.
| Supplied input | Metric display | US display |
|---|---|---|
| Available roll width | 4 m | 13.12 ft |
| Lengthwise pattern repeat | 0 mm | 0 in |
| Extra length per strip | 200 mm | 7.87 in |
| Waste allowance | 0 % | 0 % |
| Room 1: Length | 5 m | 16.4 ft |
| Room 1: Width | 6 m | 19.69 ft |
| Room 1: Strip direction | Along room length | Along room length |
Carpet roll length to purchase: 10.4 m
- Room area
- 30 m²
- Cut strips
- 2
- Purchased roll area
- 41.6 m²
No cross-room offcut optimisation or seam-placement recommendation is included.
Open this example in the full calculatorYour measurement and product-data sheet
Record what you know and mark verified items ready. Notes save on this browser after you edit them. Download a copy before clearing browser data.
Measure complete strips with the specified direction and any pattern repeat.
Roll width, usable length and the chosen repeat or end allowance.
Square area can underestimate purchased length when a room needs several full-width strips.
Input for Carpet Roll Length Calculator. Record the value with its unit and quantity basis.
Input for Carpet Roll Length Calculator. Record the value with its unit and quantity basis.
Input for Carpet Roll Length Calculator. Record the value with its unit and quantity basis.
Input for Carpet Roll Length Calculator. Record the value with its unit and quantity basis.
Input for Carpet Roll Length Calculator. Record the value with its unit and quantity basis.
Input for Carpet Roll Length Calculator. Record the value with its unit and quantity basis.
Input for Carpet Roll Length Calculator. Record the value with its unit and quantity basis. Available choices: Along room length; Along room width
Choose your next calculation
Carpet Roll Length Calculator
Plan carpet strips by roll width, room direction and any specified pattern repeat.
Carpet Seam Tape Calculator
Calculate the total joins between parallel carpet strips from an already selected strip layout.
Specified Stair Runner Length Calculator
Turn specified riser, tread and landing runs into one runner length with separately entered end allowances.
Turn the estimate into an order
- Confirm that all quantities use the same measured basis and the selected product's current data.
- Keep different products, finishes and handed variants in separate purchase lines.
- Review exact demand and whole-pack purchase quantities before entering your quoted prices.
- Record compatible stock already on hand, then save the remaining order in your browser project.
Measurement and purchase guides
Other materials in this family
Reviewed 6 October 2026. Geometry and purchase arithmetic use your measurements and selected specifications. Calculation scope.