Ready-mix concrete · Bali

Concrete volume calculator

Enter the dimensions of what you are pouring, choose a waste margin, and the calculator gives the volume in m³. Send it straight to us for a quote — the figures carry over into the form.

Updated 2026-10-03

How to measure each element

• Slab: length × width × thickness. Thickness is in metres — 12 cm is 0.12.
• Footing: length × width × depth of one footing × the number of footings.
• Column: width × depth × height × the number of columns.
• Beam: width × depth × length. Beams cast together with a slab are extra — do not forget them.
• Pool: floor area × floor thickness, plus the perimeter × wall height × wall thickness.

Which waste margin to add

Concrete is lost in the pump line, on uneven ground, in formwork that bows and in the last truck that is never exactly full. Use 5 % for flat, well-built formwork and 10 % for footings on rough ground, pools and anything pumped. Running short in the middle of a pour costs far more than a little surplus: a top-up truck is charged as a small load, and a cold joint in a slab is a defect.

From cubic metres to truck loads

Standard mixer trucks in Bali carry about 6–7 m³; smaller minimix trucks around 3 m³ reach sites that a full truck cannot. Divide your volume by the truck size and round up — the last truck is the one that decides the number of loads.

Common mistakes

• Thickness entered in centimetres instead of metres — 12 instead of 0.12 gives a hundred times the volume.
• Beams, thickenings and column heads inside the slab left out.
• Ordering the exact calculated volume with no margin.
• Not checking whether a full mixer can reach the pour — tell us the road width.
• Planning a large slab without a pump or enough labour to place it inside the concrete's working time.