Area and depth in, cubic metres out, plus trailer loads, bag counts and turf rolls. The numbers you need before you ring the landscape yard. Free, no email.
3.0m³
40m² of mulch at 75mm deep
That is about 4.5 loads in a 6x4 trailer (roughly 0.7m³ per level load), or 120 x 25L bags if you buy bagged.
Past about half a cube, bulk beats bags every time. A bulk delivery costs a fraction of the same volume in bags and saves you lugging 120 of them through the side gate.
Guide only. Coverage varies with how firm you rake it, ground levels and product type, and turf roll sizes differ between farms. Order a little over, not a little under, and confirm quantities with your supplier before the truck leaves the yard.
Every landscaper knows the formula. Area times depth, divide by a thousand, that is your cubes. The trouble is doing it in your head while the client watches, then converting it to trailer loads because your 6x4 holds about 0.7 of a cube level. This page does the whole chain: 40m² of beds at 75mm is 3.0m³, which is four and a half trailer runs or 120 bags you definitely do not want to carry.
Turf works differently, so it gets its own mode. Rolls are roughly a square metre each and every job wastes some on cuts, so the calculator adds the standard 5% and rounds up. Ordering slabs on pallets instead? It gives you the pallet count too.
At the standard 75mm depth, every square metre needs 0.075m³ of mulch, so a cubic metre covers about 13m². At 50mm a cube stretches to 20m², and at 100mm it covers 10m². Most landscapers lay 75mm on garden beds because 50mm lets weeds through within a season.
Depends entirely on depth. At 100mm a cube covers 10m², which suits topping up beds. Lawn top dressing at 50mm gets you 20m² per cube. Building up a new garden bed at 200mm, a cube only covers 5m². Pick your depth in the calculator and it does the division for you.
Bulk wins past about half a cubic metre. A 25L bag holds a fortieth of a cube, so 1m³ is 40 bags, and bagged product typically costs three to four times the bulk price per litre. Bags only make sense for small top ups or where a truck cannot get near the job.
The standard allowance is 5%, which this calculator builds in. That covers cuts around paths, edges and curves. Go to 10% if the area has lots of curves or angles. Ordering exact area with no allowance almost always leaves you one strip short, and a second delivery fee costs more than the spare rolls.
Spring enquiries come in while your hands are full of mulch, and they book whoever answers. Our AI receptionist picks up 24/7, takes the job details, quotes from your price list and books it in. Ring the demo line and hear it yourself.
