How To Calculate Cement, Sand, & Aggregate Quantity In 1 Cubic metre Concrete
Point Should Be Know Before Estimating
Density of Cement = 1440 kg/m3
Sand Density = 14501500 kg/m3
Density of Aggregate = 14501550 kg/m3
How many KG in 1 bag of cement = 50 kg
Cement quantity in litres in 1 bag of cement = 34.7 litres
1 Bag of cement in cubic metres = 0.0347 cubic meter
How many CFT (Cubic Feet) = 1.226 CFT
Numbers of Bags in 1 cubic metre cement = 28.8 Bags
The specific gravity of cement = 3.15
Grade of cement = 33, 43, 53
Where 33, 43, 53 compressive strength of cement in N/mm2
M20 = 1 : 1.5 : 3 = 5.5, (Cement : Sand : Aggregate)
Some of Mix is – 5.5
Where, M = Mix
20 = Characteristic Compressive strength
Consider volume of concrete = 1m3
Dry Volume of Concrete = 1 x 1.54 = 1.54 m3 (For Dry Volume Multiply By 1.54)
Now we start calculation to find Cement, Sand and Aggregate quality in 1 cubic meter concrete

CALCULATION FOR CEMENT QUANTITY
Cement= (1/5.5) x 1.54 = 0.28 m^{3 }∴ 1 is a part of cement, 5.5 is sum of ratio
Density of Cement is 1440/m^{3}
= 0.28 x 1440 = 403.2 kg
We know each bag of cement is 50 kg
For Numbers of Bags = 403.2/50 = 8 Bags
We Know in one bag of cement = 1.226 CFT
For Calculate in CFT (Cubic Feet) = 8 x 1.225 = 9.8 Cubic Feet

CALCULATION FOR SAND QUANTITY
Consider volume of concrete = 1m^{3 }
Dry Volume of Concrete = 1 x 1.54 = 1.54 m^{3}
Sand= (1.5/5.5) x 1.54 = 0.42 m^{3 }∴ 1.5 is a part of Sand, 5.5 is sum of ratio
Density of Sand is 1450/m^{3}
For KG = 0.42 x 1450 = 609 kg
As we know that 1m^{3} = 35.31 CFT
For Calculation in Cubic Feet = 0.42 x 35.31 = 14.83 Cubic Feet

CALCULATION FOR AGGREGATE QUANTITY
Consider volume of concrete = 1m^{3 }
Dry Volume of Concrete = 1 x 1.54 = 1.54 m^{3}
Aggregate = (3/5.5) x 1.54 = 0.84 m^{3 }∴ 3 is a part of cement, 5.5 is sum of ratio
Density of Aggregate is 1500/m^{3 }
Calculation for KG = 0.84 x 1500 = 1260 kg
As we know that 1 m3 = 35.31 CFT
Calculation for CFT = 0.84 x 35.31 = 29.66 Cubic Feet
Also you can Download Excel Sheet for Calculate Concrete Volume (Cement, Sand and Aggregate ) Quantity.
Excel Sheel For Concrete Quantity Calculation
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Now we start calculation for find Cement, Sand quality in mortar for Plaster
Area of brick wall for plaster = 3m x 3m =9m^{2}
Plaster Thickness = 12mm (Outer20mm, Inner 12mm)
Volume of mortar = 9m^{2} 0.012m = 0.108m^{3
}Ratio for Plaster Taken is = 1 : 6
Sum of ratio is = 7
Calculation for Cement Volume
Dry Volume of Mortar = 0.108 1.35 = 0.1458 m^{3}
Cement= (1/7) = 0.0208 m^{3 }
Density of Cement is 1440/m^{3}
= 0 1440 = 29.99 kg
We know each bag of cement is 50 kg
= (29.99/50) = 0.599 Bags
Calculation for Sand Volume
Sand = (6/7) x 0.1458 = 0.124m^{3}
Density of Sand is 1450/m^{3}
= 0 1450 = 181.2 kg
Now we find how many CFT (Cubic feet) Required
As we know that 1m^{3} = 35.31 CFT
= 0.124*35.31
= 4.37 CFT (Cubic Feet)
Download Excel Sheet for plaster calculator
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Very helpful in calculations of material. Small contractors can take help for rapid estimation of buildibg material.
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About cement casting and ration with type of concrit?
Can we multiply 1.54 cub meter in feet?
First understand what is 1.54.
1.54 is Multiplication factor to arrive at Dry Concrete qty from Wet concrete qty. ( Unit of qty can be in Cu. Ft or Cu mtr)
A. For Example, Wet concrete qty for flat slab is Slab area x slab thickness * pl. Note all unit of measurement should be either in mtr ( to get wet concrete vol in cu. Mtr) or in feet (to get wet concrete Vol. In cu.feet)
B. Multiply wet vol. By multiplication factor of 1.54 to get volume of Dry Concrete mixture. ** Total volume of concrete reduces by 1.54 times by adding water
C. Unit of Volume of Dry concrete will be same as wet concrete.
D. Divide Volume in cubic feet by 35.31 to get volume in Cu. Mtr.
** Same way multiply Volume in Cu. Mtr by 35.31 to get volume in Cu.ft.
Very useful for estimation and for general calculation.
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brick work me sand cement ki qty excel me kese data sheet banaye?
please go to my brick calculation post there you can get your excel sheet
Very informative
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can u send more information about mixing ratio in ethiopia standard
Very important.. Thanks
Thank you very much for this invaluable breakdown. I have a question, I’m a Nigerian and the mix ratio we use some times get me confused. for example 1:3:6, and 1:2:4 are M15 and M25 respectively, I still see some people saying the latter is M20. Please, I want to really know what is the standard mix ratio. I would also love it if we can get most of your tips in pdf.
Thank you
every country have own IS code: this ration generally follow in India, I don’t know about other country you need your country IS code.
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VERY HELPFUL FOR THIS TUTORIAL ESTIMATE
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Thank u for showing us the detail calculation of concrete. it is obviously very useful for all. However, The requirement of water can it be estimated or is there any formula or thumb rule?
ok, I will update it soon, thank you
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How much litre of water need please explain sir
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kindly tell me how to calculate 0.1524 concrete in CFT,CUM,and running meter
eg.
length is 1 meter
width is 18 inch
height (Thickness) is 6 inch
how to calculate
Very Helpful thank you so much
Simple and straight forward approach to estimating materials. Simpler that textbook methods. Thanks
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what about 1.35 used in plaster there,what is that its multiplication factor or what?
What is 403.2 when calculating number of bags of cement
Thank you for help full
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Can you send me an pdf format?