Cement calculator: bags for a house, concrete and plaster
A 1,000 sq ft ground-floor RCC house with brick walls needs about 457 bags of cement, or 0.46 bags per sq ft of built-up area. Enter your floor area and floors below for the split by RCC, brickwork, plaster and PCC, or work out the bags for any volume of concrete or mortar further down.
Cement for the house · 1,000 sq ft built-up · G
457 bags
0.46 bags per sq ft of built-up area, about 22.9 tonnes
- RCC frame (M25)
- 348 bags
- PCC under footings and floors
- 52 bags
- Brickwork, CM 1:6
- 21 bags
- Plaster, inside and outside
- 35 bags
Floor and wall tile bedding and screeds are extra. For the whole house cost, use the house construction cost calculator.
Cement for a house, by size
RCC-framed house with brick walls and plaster. Built-up area is per floor.
| Built-up a floor | G | G+1 | G+2 |
|---|---|---|---|
| 600 sq ft | 274 bags | 476 bags | 678 bags |
| 800 sq ft | 366 bags | 635 bags | 904 bags |
| 1,000 sq ft | 457 bags | 794 bags | 1,130 bags |
| 1,200 sq ft | 549 bags | 952 bags | 1,356 bags |
| 1,500 sq ft | 686 bags | 1,191 bags | 1,696 bags |
Cement per cubic metre of concrete
Nominal mixes are measured by volume (dry volume 1.54 times the wet volume). Design mixes are batched by weight to a tested recipe and need less cement for the same grade.
| Grade | Nominal mix, bags per cum | Design mix, bags per cum |
|---|---|---|
| M7.5 (1:4:8) | 3.4 | – |
| M10 (1:3:6) | 4.4 | – |
| M15 (1:2:4) | 6.3 | – |
| M20 (1:1.5:3) | 8.1 | 7 |
| M25 (1:1:2 nominal) | 11.1 | 8.2 |
| M30 | design mix only | 8.8 |
Cement for plaster and brickwork
Plaster per 100 sq ft with 10% added for uneven walls. Brickwork per cum of 230 mm wall in CM 1:6 is about 1.25 bags (CPWD).
| Plaster | CM 1:4 | CM 1:6 |
|---|---|---|
| 12 mm, per 100 sq ft | 0.94 bags | 0.67 bags |
| 15 mm, per 100 sq ft | 1.17 bags | 0.84 bags |
| 20 mm, per 100 sq ft | 1.57 bags | 1.12 bags |
Cement Quantity Calculator
Cement bags for a given wet volume of concrete or of cement mortar (plaster, brickwork, flooring screed).
Result
- Cement
- 80.6 bags (4,032 kg)
- Sand
- 4.2 m³ (148 cft)
- Aggregate
- 8.4 m³ (297 cft)
Concrete uses dry-volume factor 1.54; mortar uses 1.33. Example: 10 m³ of M20 needs about 81 bags. Add 2% wastage for cement when ordering.
Related: concrete mix design (IS 10262) · plaster rate per sq ft · brickwork rate per sq ft · steel calculator · all calculators
Frequently asked questions
How many bags of cement are needed for a 1,000 sq ft house?
About 457 bags for a 1,000 sq ft ground-floor RCC house with brick walls: 348 bags for the RCC, 21 bags for brickwork, 35 bags for plaster and 52 bags for PCC. That is 0.46 bags per sq ft. Tile bedding and screeds are extra.
How much cement is used per sq ft of construction?
About 0.4 to 0.5 bags per sq ft of built-up area for an RCC-framed brick house. Our typical G+1 house comes to 0.4 bags per sq ft, or 19.8 kg.
How many bags of cement are in 1 cubic metre of M20 concrete?
About 8.1 bags for a nominal 1:1.5:3 mix measured by volume, and about 7 bags for a design mix batched by weight (IS 10262). Ready-mix plants and good sites use design mixes, which need less cement for the same strength.
How much cement is needed for 100 sq ft of plaster?
About 0.67 bags for 12 mm internal plaster in 1:6, and 1.57 bags for 20 mm external plaster in 1:4, with 10% added for uneven walls.
How many cement bags make 1 cubic metre?
About 28.8 bags of 50 kg, taking loose cement at 1,440 kg per cum. One bag is about 0.0347 cum, or 1.23 cft.
How do I get the exact cement quantity for my building?
From a BOQ measured from your drawings: the concrete, brickwork and plaster quantities of every element, each multiplied by its mix. These estimates use typical quantities for an RCC-framed house.
Need exact quantities, not thumb rules?
Send your drawings and we measure the concrete, brickwork and plaster of every element, with the cement, sand and steel, in an Excel BOQ. BOQs start from ₹2,500 per project.
BOQ from your drawings