Gravel / Topsoil
Volume + tonnage (UK bulk-bag yield)
m
Reading 5 m
m
Reading 3 m
mm
Reading 50 mm
%
Loose material compacts down. MOT Type 1 / Type 3: allow 20–25%. Decorative gravel and topsoil: 0–10%.
Results
Volume
0.75m³
Tonnes
1.13t
Surface15 m²
Depth50 mm
Density1.5 t/m³
Imperial26.5 ft³
Suggested Materials
20mm decorative gravel bulk (dumpy) bag
≈0.7m³ each
2 bag
20mm decorative gravel 25kg handy bag (alt.)
45 bag
Weed-control membrane
17 m²
Estimates use standard UK trade rules of thumb. Always check the bag/spec on the day.