Garden calculator
Turf Roll Calculator
The worked example gives 40 (Lawn area (m²)).
Example with the pre-filled values
Lawn area (m²): 40 · Turf area including allowance (m²): 42 · Rolls to order: 42
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Your measurements and assumptions
Use the actual product label and your measured quantities. Starting values are editable examples, not universal rates or product specifications. Keep the units beside each input.
| Lawn length | 8 | m |
|---|---|---|
| Lawn width | 5 | m |
| Area covered per roll | 1 | m² |
| Extra allowance | 5 | % |
Method and assumptions
The lawn is treated as a rectangle; divide irregular lawns into measured sections.
Roll coverage must match the supplier's stated turf size.
Example with the selected inputs
- lawnArea: 40
- rolls: 42
Change the inputs to match your own task. Whole packages are rounded up after allowances, so purchase quantity and actual requirement can differ. Apply each allowance once.
Worked example
With Lawn length: 8 m; Lawn width: 5 m; Area covered per roll: 1 m²; Extra allowance: 5 %, the calculator returns Lawn area (m²): 40.
| Inputs | Changed input |
|---|---|
| Lawn length | 8 m |
| Lawn width | 5 m |
| Area covered per roll | 1 m² |
| Extra allowance | 5 % |
| Calculated result | Changed input |
|---|---|
| Lawn area (m²) | 40 |
| Turf area including allowance (m²) | 42 |
| Rolls to order | 42 |
Method and assumptions
The lawn is treated as a rectangle; divide irregular lawns into measured sections. Roll coverage must match the supplier's stated turf size.
Common-value reference
The reference cases change only Lawn length. The remaining inputs stay at the displayed values. These are worked scenarios, not universal rates, dimensions, product specifications or current shop prices.
| Lawn length | Lawn area (m²) |
|---|---|
| Lawn length: 8 m | Lawn area (m²): 40 |
| Lawn length: 4 m | Lawn area (m²): 20 |
| Lawn length: 12 m | Lawn area (m²): 60 |
| Lawn length: 16 m | Lawn area (m²): 80 |
| Lawn length: 24 m | Lawn area (m²): 120 |
Questions and answers
How is this example calculated?
The lawn is treated as a rectangle; divide irregular lawns into measured sections. Roll coverage must match the supplier's stated turf size. In the displayed example, Lawn length: 8 m; Lawn width: 5 m; Area covered per roll: 1 m²; Extra allowance: 5 %. The calculated outputs are Lawn area (m²): 40; Turf area including allowance (m²): 42; Rolls to order: 42. Keep the labels and units with these numbers: they describe this particular combination of inputs, not a result that can be reused after the measurements or assumptions change.
What changes when I edit Lawn length?
The table isolates that input while keeping the other displayed settings fixed. For Lawn length: 4 m, the result is Lawn area (m²): 20; for Lawn length: 24 m, it is Lawn area (m²): 120. Those values come from the same calculator used on this page. They show the effect of changing the input, rather than prescribing which input is right for your own task.
How should I use the different result figures?
Read each named quantity separately: Lawn area (m²): 40; Turf area including allowance (m²): 42; Rolls to order: 42. A value with a different label or unit answers a different part of the calculation. Check the measurements and assumptions before using any figure. The reference cases explain the arithmetic under their stated conditions; they do not verify a product label, a recipe or the conditions of a particular project.