Cement Bag Calculator
Work out how many 50 kg cement bags a job needs. Enter the volume, pick a concrete grade or a mortar / plaster ratio, and get the indicative bags plus sand and aggregate.
The finished (wet / in-place) volume of concrete, mortar or plaster.
About 403 kg of cement (50 kg bags) for 1 m3 of concrete.
Uses a 1.54 dry-volume factor and the M20 concrete (1:1.5:3) ratio, cement at 1440 kg/m3. Allow wastage and round up when ordering.
Indicative only. Nominal mixes suit small, non-critical work. Structural concrete (footings, columns, slabs, retaining walls) needs a design mix, cover and reinforcement specified by a licensed structural engineer to IS 456. This tool estimates materials to help you order — it does not set the grade for your structure.
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Building MaterialsRelated Tools — You may also find these useful
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The coarse aggregate (jelly / crushed stone) a concrete volume needs, in cubic metres, cubic feet and tonnes, by nominal grade.
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The nominal mix breakdown for a concrete grade - cement:sand:aggregate ratio with bags, sand, aggregate and water.
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The R-value and U-value of an insulation layer by material and thickness, and the thickness for a target R.
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