Ready Mix Concrete Volume Calculator

A 1000 sq ft slab at 150 mm thickness requires approximately 14 m³ of ready mix concrete before wastage. Convert 1000 sq ft to 92.9 m², multiply by 0.15 m thickness to get 13.93 m³. Add 5 percent wastage to get 14.6 m³ — round up to 15 m³ to order. At a 6 m³ truck capacity, book three transit mixer loads. At 7 m³ per truck (UAE standard), you need three dispatches. Use the ready mix concrete calculator above: enter length 9.3 m, width 10 m, thickness 150 mm, and select 5 percent wastage.

Ready mix concrete is batched at a central plant under controlled conditions — weighed cement, aggregates, water, and verified admixtures. Transit mixers deliver within 90 minutes of batching per IS 4926 and BS EN 206. Site mix concrete uses volumetric batching and manual water addition on site. Quality varies batch to batch and water-cement ratio control is poor. IS 456 prohibits site mix for structural members above M20. For any structural slab, column, or footing, use RMC from a certified plant.

Column volume = Length (m) × Width (m) × Height (m) × Number of columns. For a 450 × 300 mm column at 3 m height: 0.45 × 0.30 × 3.0 = 0.405 m³ per column. For 12 columns: 4.86 m³ net. Add 5 percent wastage: 5.1 m³ total. The RMC concrete calculator Column tab handles this automatically — enter cross-section in mm, height in metres, and count.

0 percent — controlled precast or laboratory setting only. 5 percent — standard for flat slabs, beams, and columns with proper shuttering. Accounts for pump line filling, spills, and minor formwork bulge. 10 percent — earthen footing pits (ground absorbs moisture from fresh concrete), sloped surfaces, or complex curved shuttering. Always round the ordered volume up to the nearest 0.5 m³. RMC plants in India bill in 0.5 m³ increments; GCC plants bill per cubic metre.

6 m³ — standard in India. Most urban RMC plants dispatch 6 m³ trucks. 7 m³ — standard in UAE, Qatar, and Saudi Arabia. Also used on larger Indian infrastructure sites with road permits. 8 m³ — large infrastructure pours where gross vehicle weight is permitted. This concrete truck calculator uses your selected truck size to calculate exact loads. Add one buffer truck on pours above 20 m³.

Ready mix concrete ordered from a plant comes in bulk cubic metres, not bags. For comparison: one 50 kg bag of cement in M25 site mix (1:1:2 ratio) produces approximately 0.035 m³ of concrete. To produce 1 m³ of M25 you need roughly 8.2 bags of 50 kg cement. When you order 1 m³ of M25 RMC, the plant delivers the equivalent mix with weighed batching, verified admixtures, and consistent slump. For any pour above 5 m³, RMC from a plant costs less than site mix when labour, mixer hire, and quality rejection risk are included.

Volume per footing = Length × Width × Depth. For a 2 m × 2 m × 0.5 m footing: 2.0 m³ per pad. For 16 footings: 32 m³ net. For earthen pits with no side shuttering, use 10 percent wastage — the ground absorbs moisture from fresh concrete. Total order: 35.2 m³, round up to 36 m³. Select the Footing tab in the ready mix concrete quantity calculator above, enter dimensions in metres, enter count, select 10 percent wastage, and click Calculate.

Yes. The volume formula is identical for ready mix concrete, premix concrete, dry mix concrete, and pre-bagged concrete — volume depends only on the structure dimensions. The difference between these product types lies in delivery method and water addition, not in how you calculate the volume needed. Use this premix concrete calculator for any pour type: enter your dimensions, select wastage, and the cubic metre output applies equally to RMC plant orders, premix bags for smaller pours, or dry mix bag orders. For ready mix concrete bags or premix bags, divide the m³ result by the volume per bag stated on the product packaging — typically 0.009 to 0.012 m³ per 20 kg bag.