Turf rolls Calculator: measuring notes and method
Break curved lawns into measured sections
Approximate an irregular lawn with smaller measured shapes, then add the areas. Keep waste for cuts separate from the measured lawn area so you can review the allowance.
Use actual roll coverage
A turf roll is not always one square metre. Confirm width, length and sale unit with the supplier. The result covers turf only; soil preparation and any additional topsoil are separate quantities.
Formula
Packs = net area × (1 + waste ÷ 100) ÷ installed coverage per pack, rounded up.
Worked examples in metric and imperial units
Illustrative values match Reset example and stay fixed when you edit the calculator. Both columns describe the same calculation; converted inputs are rounded.
Metric worked example
- Total surface area
- 24 m²
- Area per roll
- 1 m²
- Waste allowance
- 5 %
Turf rolls to buy: 26
Imperial worked example
- Total surface area
- 258.3339 ft²
- Area per roll
- 10.7639 ft²
- Waste allowance
- 5 %
Turf rolls to buy: 26
Follow the calculation
- Area including allowance = 24 × 1.05 = 25.2 m².
- Divide by 1 m² installed coverage per pack or roll, then round up to a whole purchase unit.
Reviewed 19 October 2026. How calculations are checked · Report a correction
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