Planning tool
Pebble quantity calculator
Work out roughly how much material your area needs before you enquire. Enter the area and the depth of cover you want, and the calculator returns an approximate weight range you can send straight to us.
Estimated requirement
- Area
- 9.29 sq m / 100 sq ft
- Approximate volume
- 0.46 cubic metres
- Approximate quantity
- 0.70 – 0.77 tonnes
This is an estimate only. The final requirement depends on pebble size, actual bulk density, compaction, ground conditions and site wastage. Confirm the quantity with us before ordering.
How to measure your area
- Break irregular areas into rectangles and measure each one separately.
- Measure at the widest points, then subtract planting pockets and paving.
- Decide the depth of cover you want before calculating, not after.
- Add a modest allowance for settlement and for topping up later.
Coverage at a glance
Approximate quantities for one square metre of standard 10–30 mm pebbles, using a bulk density of about 1.5 tonnes per cubic metre.
- 25 mm depth (light decorative cover)
- about 38 kg per sq m
- 40 mm depth (typical garden bed)
- about 60 kg per sq m
- 50 mm depth (full decorative cover)
- about 75 kg per sq m
- 75 mm depth (walked-on path)
- about 113 kg per sq m
Planning approximations only. Confirm the final quantity with us before ordering.
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