How this calculator works
Enter your lawn's length and width and the calculator plans rolls (artificial grass comes in fixed 2 m and 4 m widths) to fit your shape with the fewest joins and least waste. It also sizes the sub-base and laying-course aggregates, plus joining tape, adhesive and pins — so the whole job lands in one order. For the full method on building the base, joining rolls and brushing in infill, see the how to lay artificial grass guide.
Need the sub-base worked out too?
Estimate MOT Type 1 tonnes and bulk bags for the base under your lawn.

