PangPang Tools5 m × 4 m × 150 mm; 1 item; allowance 5%
Geometric 3 m³; extra 0.15 m³; total 3.15 m³Convert 150 mm to 0.15 m before multiplying 5×4×0.15, then add the chosen 5%.
Construction & Electrical
Cubic metre and concrete volume calculator
About this tool
Calculate geometric volume for a slab, wall, excavation or circular column. Each dimension has its own m, cm or mm selector, so a slab thickness can stay in millimetres while its length is in metres. Separate a single item, repeated quantity and additional volume allowance; one cubic metre is 1,000 litres.
Concrete & volume
Choose a task. Inputs stay in this page only.
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Result
Worked examples
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Result
Worked examples
Slab length (m) 10 · Slab width (m) 6 · Thickness (cm) 15 · Opening area (m²) 0
First calculated quantity: 60.0000 m²Calculate slab concrete volume from length, width, thickness and floor openings. Subtract openings before multiplying by thickness; waste, reinforcement and supplier ordering are separate.
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Result
Worked examples
Wall length (m) 10 · Wall height (m) 3 · Thickness (mm) 200 · Opening area (m²) 2
First calculated quantity: 28.0000 m²Measure concrete wall volume after deducting door and window openings. Openings are entered as surface area; wall thickness is assumed uniform.
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Result
Worked examples
Column diameter (mm) 400 · Column height (m) 3 · Column count 6
First calculated quantity: 0.376991 m³Calculate concrete volume for round solid columns using diameter, height and quantity. Columns are assumed solid circular cylinders. Deduct large voids separately.
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Result
Worked examples
Beam width (mm): 300, Beam height (mm): 600, Beam length (m): 24
Beam cross section: 0.18 m²Using these sample input values gives the first labelled output above. Gross rectangular volume; deduct overlaps with columns and slabs separately.
Questions & answers
Can I use the default numbers for purchasing or safety certification?
No. Replace the examples with your real values. Gross rectangular volume; deduct overlaps with columns and slabs separately.
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Result
Worked examples
Total footing run (m) 30 · Footing width (m) 0.6 · Footing depth (m) 0.5
First calculated quantity: 0.300000 m²Estimate rectangular continuous footing concrete by run length, footing width and depth. The result assumes a constant rectangular footing section, not stepped or sloped excavation.
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Bore diameter (mm): 500, Bore depth (m): 6, Bore count: 4
Bore section: 0.19635 m²Using these sample input values gives the first labelled output above. Uniform cylindrical bore geometry only; excludes widened base and overruns.
Questions & answers
Can I use the default numbers for purchasing or safety certification?
No. Replace the examples with your real values. Uniform cylindrical bore geometry only; excludes widened base and overruns.
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Result
Worked examples
Target volume (m³) 2 · Product yield per bag (L) 15 · Extra material (%) 5
First calculated quantity: 2.10000 m³Estimate full bag count from target concrete volume and product yield per bag. Use the yield printed on the actual product. Do not infer yield from bag weight alone.