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Cement Calculator
Find how many 50 kg cement bags you need for a given volume of concrete, brick mortar or plaster. Pick the work type and enter the volume — we apply the right dry-volume factor and mix ratio and show the bags, plus sand and aggregate.
Work & volume
Cement required—
Sand—
Aggregate—
Cement rate for a cost
₹
How it's calculated
The wet volume is scaled to dry volume — ×1.54 for concrete, ×1.33 for mortar and plaster — then the cement share of the mix ratio is taken and divided by 0.0347 m³, the volume of one 50 kg bag.
Cement bags = (wet volume × dry factor × cement-ratio share) ÷ 0.0347.
Need the full concrete breakdown with aggregate? Use the concrete calculator. Plastering a wall? The plaster calculator takes area and thickness directly.
Frequently asked questions
How many bags in 1 m³?
About 28.8 bags of loose cement fill 1 m³; in a mix the count depends on the ratio.
Cement for 1 m³ M20?
Roughly 8 bags (~403 kg) before wastage.
Concrete vs mortar factor?
Concrete uses 1.54; mortar and plaster use 1.33, because they compact differently.