Cinder Block Dimensions

Cinder block dimensions or concrete blocks, which can be found in the markets, can be varied. However, there are standard measurements of concrete blocks, which are similar for most countries, which we will see later.

Cinder Block Dimensions

There may be a difference of about 5mm between the commercial measurements of a concrete block (40x20x10cm) and the manufacturing measurements (for example, 49.5×19.5×9.5cm), which is important to take into account.

How Big is a Cinder Block

The main measurements of a cement block are the following:

Standard Measurements of a Concrete Block

• 40x20x10cm block
• 40x20x15cm blocks
• 40x20x20cm blocks

The size of a common concrete block is 400x200mm (length x height), while the thicknesses or widths vary according to the type of block, and the main use for which it is designed.

Manufacturing Tolerances

At the same time, the total measurements (length x height x width) of a block may differ approximately ± 3 mm from the measurements specified for sale.

How big is a Cement Block in Inches?

In countries whose language is English or with Anglo-Saxon influence, block measurements can be found in inches.

Standard Measurements of a Concrete Block in Inches and Millimeters

Measurements in inches (inches)	Measurements in mm
16 x 8 x 4” block	400x200x100mm blocks
16 x 8 x 6” block	400x200x150mm blocks
16 x 8 x 8” block	400x200x200mm blocks

How long is a Concrete Block?

Mainly the length of a cinder block (standard) is 40cm (400mm).

However, we can find cement block measures 30cm or 50cm long. These block dimensions may be less practical for general masonry work, due to its great weight, less portability or less progress in the execution of the work.

The height of a standard cinder block is 19 to 20cm.

Hollow Cement Block Measurements

Within the hollow cement blocks, we find those with 2 holes and those with 3 holes. The blocks with 2 holes are usually more appropriate for the construction of partitions and interior dividing walls. The blocks with 3 holes are more resistant, have a larger support area and can cost a little more

Measurements of Cement Blocks of 2 Holes of 40cm Long

Standard Block of 2 Holes of 1 0

Commercial measure	40x20x10cm
Weight	7.3kg/u
Consumption	12.5u/m²
Endurance	20-80kg/cm²
Use	Partitions
A smooth face

Standard Block of 2 Holes of 12

Commercial measure	40x20x12cm
Weight	12.6kg/u
Consumption	12.5u/m²
Endurance	20-100kg/cm²
Use	Partitions-Load
Two smooth faces

Standard Block of 2 Holes of 1 5

Commercial measure	40x20x15cm
Weight	11.1kg/u
Consumption	12.5u/m²
Endurance	20-100kg/cm²
Use	Partitions-Load
A smooth face

Standard Block of 2 Holes of 20

Commercial measure	40x20x20cm
Weight	14.6kg/u
Consumption	12.5u/m²
Endurance	20-100kg/cm²
Use	Burden
A smooth face

Measurements of Cement Blocks of 2 Holes of 50cm Long

Block of 2 Holes of 15

Commercial measure	50x20x15cm
Weight	14kg/u
Consumption	10u/m²
Endurance	20-100kg/cm²
Use	Partitions-Load
Two smooth faces

Block of 2 Holes of 20

Commercial measure	50x20x20cm
Weight	17kg/u
Consumption	10u/m²
Endurance	20-100kg/cm²
Use	Burden
Two smooth faces

Measurements of Cement Blocks with 3 Holes

The 3-hole cinder block have greater bearing capacity, since they increase their support area, and even their net volume.

Standard Block 3 Holes of 1 0

Commercial measure	40x20x10cm
Weight	8.3kg/u
Consumption	12.5u/m²
Endurance	20-25kg/cm²
Use	Partitions
A smooth face

Standard Block 3 Holes of 15

Commercial measure	40x20x15cm
Weight	12.5kg/u
Consumption	12.5u/m²
Endurance	20-50kg/cm²
Use	Partitions-Load
A smooth face

Standard Block 3 Holes of 20

Commercial measure	40x20x20cm
Weight	17kg/u
Consumption	12.5u/m²
Endurance	20-70kg/cm²
Use	Burden
A smooth face

Solid Cinder Block Dimensions

Another of the types of blocks (also called concrete bricks), widely used in HOUSE DESIGN and construction, are solid blocks, which considerably increase the resistance of load-bearing walls.

The main disadvantages of solid blocks come from their weight. Therefore, it is more difficult to carry out masonry and construction work with them.

In turn, they increase the dead weight or permanent loads of the work, and are more expensive, since they involve a greater amount of cement and aggregate for their manufacture.

Solid Standard Block of 10

Commercial measure	40x20x10cm
Weight	17kg/u
Consumption	12.5u/m²
Endurance	60-100kg/cm²
Use	Partitions
Two smooth faces

Solid Standard Block of 15

Commercial measure	40x20x15cm
Weight	24kg/u
Consumption	12.5u/m²
Endurance	60-100kg/cm²
Use	Partitions-Load
Two smooth faces

Solid Standard Block of 20

Commercial measure	40x20x20cm
Weight	35kg/u
Consumption	12.5u/m²
Endurance	60-100kg/cm²
Use	Burden
Two smooth faces

Solid Curved Block of 15

Commercial measure	40x20x15cm
Weight	24kg/u
Consumption	12.5u/m²
Endurance	30kg/cm²
Use	Facades
A smooth face

Perforated Cinder Block Dimensions

This type of block presents various advantages, since it combines the properties of hollow and solid blocks, and includes acoustic characteristics. 

Without being solid blocks, they have great resistance to compression and support area. Although they may be more expensive, they are a good option, among the MATERIALS TO BUILD A ROOM.

20 Perforated Cement Block

Commercial measure	40x20x20cm
Weight	27kg/u
Consumption	12.5u/m²
Endurance	60-100kg/cm²
Use	Burden
A smooth face

Corner Cinder Block Measurements

Corner Cement Block

Commercial measure	40x20x15/20cm
Weight	15kg/u
Consumption	12.5u/m²
Endurance	60-100kg/cm²
Use	Burden
A smooth face

Acoustic Concrete Block Measurements

They are blocks with acoustic properties, due to the design of internal holes, which allow better isolation of external noise.

20 Perforated Cement Block

Commercial measure	50x20x20cm
Weight	29kg/u
Consumption	12.5u/m²
Endurance	30kg/cm²
Use	Partitions

Measures of Media Media Concrete Blocks

These blocks can be solidified and reinforced with steel rods, thus forming load-bearing walls or more resistant dividing walls.

Half Block for load-bearing walls 20cm thick

Commercial measure	19x19x19cm
Weight	8.3kg
Consumption	25u/m²
Endurance	80-150kg/cm²
Use	Structural

Half block for 15cm thick partitions

Commercial measure	14.5x19x19cm
Weight	6.9kg
Consumption	20-25u/m²
Endurance	20-70kg/cm²
Use	Divisions

Measures of Concrete Bands

These are precast concrete parts, the production of which is similar to cinder blocks. The concrete hoops function as lost formwork, to build teeth and other types and smaller armed enclosures. They are manufactured in different sizes.

Concrete Strap for Lintels

Commercial measure	50x20x20cm
Weight	18kg
Consumption	2u/ml
Endurance	30-70kg/cm²
Use	Structural

Reinforced Concrete Lawn Block Measurements

They are concrete blocks reinforced with rods, capable of withstanding inclement weather, changes in temperature and humidity. They must be reinforced to resist the passage of light vehicles.

33×33 Lawn Blocks

Commercial measure	33x33x7cm
Weight	9.0kg/u
Consumption	10u/m²
Use	Grass

Grass Blocks 10×12 Fibered

Commercial measure	10x12x10cm
Weight	1.0kg/u
Consumption	90u/m²
Use	Grass

Measurements of Decorative Cement Blocks (lattices)

The design possibilities of a lattice-type mortar block are innumerable, and only depend on creativity and what you want to achieve. They can have different formats and measurements. They are used in dividing walls, perimeter fences, sifting the entry of light and visuals. Here only 3 examples are shown.

40×20 Cement Lattice

Commercial measure	40x20x6cm
Weight	4.0kg/u
Consumption	12.5u/m²
Use	Partition-Deco

40×40 Cement Lattice

Commercial measure	40x40x7cm
Weight	8.0kg/u
Consumption	6.5u/m²
Use	Partition-Deco

40×40 Cement Lattice

Commercial measure	40x40x7cm
Weight	8.2kg/u
Consumption	6.5u/m²
Use	Partition-Deco

Measurements of Ornamental Concrete Blocks

In some countries they are called ornamental shutter-type blocks , while in others they are called anti-rain blocks. They have the function of regulating the entry of air, light and rain, as well as the views from the outside.

30×30 rain block

Commercial measure	30x30x8cm
Weight	8.0kg/u
Consumption	10u/m²
Use	Partition-Deco

Crystal Block Measurements (Glass)

These small glass blocks have a decorative function, to create interior divisions or small wall panels that allow the passage of natural light. They are sold in a wide range of products, with different designs, sizes, colors…

Neutral Glass Block

Commercial measure	11.5×11.5x8cm
Weight	1.0kg/u
Consumption	65u/m²
Use	Partition-Deco
Acoustic insulation	40dB

Orange Glass Block

Commercial measure	15x15x8cm
Weight	1.4kg/u
Consumption	41u/m²
Use	Partition-Deco
Acoustic insulation	40dB

Waves Glass Block

Commercial measure	19x19x8cm
Weight	1.7kg/u
Consumption	25u/m²
Use	Partition-Deco
Acoustic insulation	42dB

Bearing Concrete Block Measurements, Loading Walls

In some countries, they are differentiated by the nomenclature of Grade A, Grade B and Grade C , with grade A being the one with the best quality and grade C the one with the least benefits.

Mortar (cement and sand) or concrete (cement, sand and gravel or granite) blocks can reach resistances of 70 kg/cm ² (7.0MPa) and even higher depending on the thickness of the block, the water-cement ratio, the compaction in its elaboration, and the curing conditions.

The same in BRICK walls as in concrete block walls , the increase in the resistance of the mortar (and its quality of elaboration) favorably affect the ultimate resistance of a wall.

Concrete Block Measures by Countries

Following, measurements of concrete blocks in different countries are shown. This can be useful, for example, if we want to calculate HOW MANY BAGS OF CEMENT ARE NEEDED TO BUILD 1000 BLOCKS WALLS .