What is unit weight of concrete? unit weight of concrete in kg/m3, kg/ft3, kN/m3, lbs/ft3 and lbs/in3 | density of concrete in lb/ft^3

Typical concrete is mixture of Portland stone cement fine aggregate (sand) and coarse aggregate with water. If it is used without provided with reinforcement/steel, then it is known as plain cement concrete and if it is used with reinforcement embedded, then it is known as reinforced cement concrete.

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Generally, Unit Weight of concrete is range from 2400 to 2500kg/m3 measured in Kilogram per cubic metre, and when it is measured in pound per cubic foot then it is range from 150 to 156lb/ft3.

**What is the unit weight of concrete?**

Unit weight of concrete is defined as ratio of mass of concrete per unit volume, the **density** of **concrete** is a measure of its **unit weight**. **Concrete** is a mixture of Portland **cement**, sand and coarse aggregates/ gravel water, and sometimes some supplementary materials such as fly ash, slag, and various admixtures.

A normal unit **weight of concrete** weighs 3600 lb per yard or 133 lb per cubic feet in dry mix condition and for wet condition it weighs around 4050 pounds per yard which is approximately equal to 2400 kg per cubic meter or 150 lbs per cubic foot.

Generally, unit weight of concrete is range from 2400 to 2500 kg/m3 measured in kilogram per cubic metre, and when it is measured in pound per cubic foot then it is range from 150 to 156 lb/ft3 (3600 lbs/ yard in dry mix and 4050 lbs/ yd3 in wet mix)

Weight of concrete depends on density of material cement, sand ,aggregate are used, water proportion, availability of void percentage in the mix, type of mix proportion and their compaction and shrinkage. Denser the concrete, higher its weight.

Unit weight of concrete is defined as ratio of weight of concrete to its unit volume, weight of concrete measured in kilogram (kg) and its volume is measured in cubic metre (m3), then its unit weight = unit mass/unit volume, represented as W = m/V, where W is concrete unit weights, m for mass and V for volume, it is also known as specific weight of concrete or density of concrete and their SI unit is kilogram per cubic metre (kg/m3).

Concrete unit weight generally depends on the entrapped air and water cement ratio but for estimation of different quantities and for making budget estimation before construction, we take unit weight of PCC (plain concrete cement) as 24KN per cubic meter and for RCC (reinforced cement concrete) as 25KN per cubic metre.

**Unit Weight of concrete in kg/m3, kg/ft3, kN/m3, lbs/ft3 and lbs/in3**

Unit weight of typical concrete is about 4050lb/yd^3, 150lb/ft^3, 2400kg/m3, 24kN/m3, 0.0867lb/inch^3, 0.0024kg/cm^3, or 68kg/ft^3.

Unit weight of typical concrete is about 4050lb per cubic yard, 150lb per cubic feet, 2400kg per cubic meter, 24kN per cubic meter, 0.0867lb per cubic inch, 0.0024kg per centimeter, or 68kg per cubic foot.

Typical concrete weight measured in different units like kilogram per metre, which is represented as kg/m3, kilogram per cubic foot, indicated as kg/ft3, kilonewton per cubic meter, indicated as kN/m3, Pounds per cubic foot, indicates as lbs/ft3, Pounds per cubic inch, indicates as lbs/in3, kilogram per cubic centimetre, indicates as kg/cm3, etc.

**Unit Weight of concrete as per IS 456**

As per Indian standard, IS code 456, typical concrete unit weight measured in kg/m3, so their unit weight for PCC (plain concrete cement) is around 2400 kg per cubic meter and for RCC (reinforced cement concrete) is kept around 2500 kg per cubic metre.

**Unit Weight of concrete in kN/m3**

Typical concrete Unit Weight measured in kilo Newton per cubic metre, which is indicated as kN/m3, so their unit weight in kN/m3 for PCC (plain concrete cement) is around 24kN per cubic meter and for RCC (reinforced cement concrete) is kept around 25kN per cubic metre.

**Unit Weight of concrete in kg/ft3**

Typical concrete Unit Weight measured in kilogram per cubic foot, which is indicated as kg/ft3, so their unit weight in kg/ft3 for PCC (plain concrete cement) is around 68kg per cubic foot and for RCC (reinforced cement concrete) is kept around 71kg per cubic foot.

**Unit Weight of concrete in kg/cm3**

Typical concrete Unit Weight measured in kilogram per cubic centimeter, which is indicated as kg/cm3, so their unit weight in kg/cm3 for PCC (plain concrete cement) is around 0.0024kg per cubic centimeter and for RCC (reinforced cement concrete) is kept around 0.0025kg per cubic centimeter.

**Unit Weight of concrete in lb/ft3 **

Typical concrete unit weight measured in pounds per cubic foot, which is indicated as lb/ft3, so their unit weight in lb/ft3 for PCC (plain concrete cement) is around 133 pounds per cubic foot in dry mix condition which is approximately equal to 3600 lbs per yard, 150 lb per cubic foot or 4050 lb per yard in wet mix and for RCC (reinforced cement concrete) is kept around 156 pounds per cubic foot or 4212 lbs per yard.

**Density of concrete in lb/ft3**

Typically, concrete has a density of **150 pounds per cubic foot (lb/ft3)**, which means that a block of concrete that is one foot wide, one foot long, and one foot high would weigh approximately 150 pounds.

**Unit Weight of concrete in lb/in3**

Typical concrete Unit Weight measured in pounds per cubic inch, which is indicated as lb/in3, so their unit weight in lb/in3 for PCC (plain concrete cement) is around 0.0867 pounds per cubic inch and for RCC (reinforced cement concrete) is kept around 0.0903 pounds per cubic inch.

**Conclusions:**

Unit weight of typical concrete is about 4050lb/yd^3, 150lb/ft^3, 2400kg/m3, 24kN/m3, 0.0867lb/inch^3, 0.0024kg/cm^3, or 68kg/ft^3.