The standard hollow block size in UAE has a face of 400 mm long by 200 mm high, with the width, or thickness, varying by wall type. The common widths are 100mm (4 inch), 150mm (6 inch), and 200mm (8 inch), with 250mm and 300mm available for thicker walls. So a typical block is written as 400 x 200 x 200mm (length x height x width). Thinner 100mm blocks suit internal partitions, while 200mm blocks are used for exterior and load-bearing walls. Global Concrete manufactures hollow blocks in these standard UAE sizes, and as a trusted concrete block supplier in Dubai we also make solid, thermal, and lightweight blocks. You can also order hollow blocks online. Knowing the right hollow block size in UAE helps you plan walls, quantities, and cost with confidence.
What Is the Standard Hollow Block Size in UAE?
Across the UAE, hollow blocks share a standard face size, with only the width changing between them. The face measures 400mm in length by 200mm in height, which is the size builders and suppliers work with as standard. This consistency makes planning and ordering simple.
The width is what varies, based on how thick the wall needs to be:
| Width (thickness) | Face size (L × H) | Common use |
| 100 mm (4 inch) | 400 × 200mm | Internal partition walls |
| 150 mm (6 inch) | 400 × 200mm | Medium load-bearing walls |
| 200 mm (8 inch) | 400 × 200mm | Exterior and load-bearing walls |
| 250 mm (10 inch) | 400 × 200mm | Thicker structural walls |
A 400 x 200mm face with a chosen width is the standard hollow block across UAE projects.
What Do the Dimensions Actually Mean?
Hollow block sizes are usually written as three numbers, and knowing the order avoids confusion. The dimensions describe the length, the width, and the height of the block.
The length (400mm) and height (200mm) form the visible face when the block sits in a wall. The width is the block’s thickness, which becomes the thickness of the finished wall. One point to note: the stated “nominal” size often includes a 10 mm mortar joint, so the actual block may measure around 390 mm by 190 mm, sitting on a 400 x 200 mm module once laid. Reading the dimensions correctly ensures you order the exact block your wall needs.
Which Hollow Block Size Should You Use?
Choosing the right size comes down to the wall’s job, because each width suits a different type of wall. Matching them correctly keeps a building both strong and cost-effective.
Here is how the common sizes are typically used:
- 100 mm (4 inch): Light internal partition walls that divide rooms.
- 150 mm (6 inch): Load-bearing walls in medium structures.
- 200 mm (8 inch): Exterior walls, foundations, and boundary walls.
- 250 mm and above: Thicker structural or specialist walls.
Using a thin block for a load-bearing wall, or a thick block for a simple partition, wastes either strength or money. Matching the block width to the wall’s job is the key to an efficient build.
How Much Does a Hollow Block Weigh?
Weight matters for handling, transport, and structural load, and it rises with the block’s width. A wider block contains more material, so it weighs more.
As an approximate guide for normal-weight blocks, a 100mm block weighs around 12 to 14 kg, a 150mm block around 16 to 18 kg, and a 200mm block about 20 kg. Lightweight versions weigh noticeably less for the same size, which is why they are chosen to cut structural load. Because exact weight depends on the mix and density, we confirm the figure for your chosen block. Knowing the weight helps you plan handling and delivery correctly.
How Many Hollow Blocks per Square Meter?
Estimating your quantity is simple once you know the face size, and it helps you order the right amount. The calculation uses the area of one block’s face.
A standard block face of 400 mm by 200 mm covers 0.08 square metres. Dividing one square metre by that area gives about 12.5 blocks per square metre, before allowing for mortar joints and wastage. For a real project, add a small margin for cuts and breakages. To estimate your total, multiply your wall area by roughly 12.5, then add a little extra. A quick per-square-metre figure keeps your order accurate and your budget on track.
Why Does Choosing the Right Size Matter?
Getting the size right affects strength, cost, and speed, so it is worth planning before you order. The wrong size creates problems that are expensive to fix later.
A block that is too thin for a load-bearing wall weakens the structure, while an oversized block for a simple partition adds needless weight and cost. The right size also affects how quickly walls go up and how much mortar is used. Choosing between solid blocks and hollow blocks matters too, and our guide on hollow vs solid blocks helps you decide. Matching size and type to the wall keeps a project strong and on budget.
Do Hollow Blocks Come in Different Types?
Yes, the same standard sizes are available in different block types, so you can match both size and performance. The size stays consistent while the block’s properties change.
Alongside normal-weight hollow blocks, you can get the same sizes as lightweight blocks to reduce structural load, or as thermal blocks to cut heat gain in the UAE climate. This means you choose the width for your wall and the type for your performance need. Having the same sizes across block types keeps your design flexible without complicating the order.
How Do You Order the Right Hollow Blocks?
Once you know the size and type you need, ordering from a manufacturer is straightforward. Global Concrete supplies hollow blocks in all the standard UAE sizes, and we confirm the exact specification for your project before supply.
As a trusted block factory in Dubai, we produce blocks to consistent dimensions batch after batch, helping keep your walls even and mortar use efficient. You can learn more about how Dubai hollow block manufacturers meet demand in our guide. Ordering the correct size from a reliable manufacturer helps keep your build accurate and dependable.
Get the Right Hollow Blocks for Your Project
Knowing the standard hollow block size in UAE is the first step; sourcing quality blocks in that size is the next. Global Concrete manufactures hollow blocks in every standard width, made to consistent, accurate dimensions for reliable building.
We sell direct, so you get competitive pricing and a dependable supply for orders of any size. Whether you need a small quantity for a home project or bulk volume for a large site, we confirm your required sizes and deliver across the UAE. Accurate blocks from a trusted manufacturer help keep your walls straight and your project on schedule.
Need hollow blocks in the right size for your project? Contact Global Concrete today to request a quote for high-quality hollow blocks in every standard UAE size, with reliable delivery across the UAE.
Frequently Asked Questions
- What is the standard hollow block size in UAE?
The standard face is 400mm long by 200mm high, with widths of 100mm, 150mm, and 200mm most common. Thicker 250mm and 300mm blocks are available for heavier walls. - What are the common hollow block sizes in inches?
The common widths are 4 inches (100 mm), 6 inches (150 mm), and 8 inches (200 mm), all with a face of roughly 16 inches by 8 inches (400 x 200 mm). - Which hollow block size is used for partition walls?
The 100 mm (4 inch) block is typically used for internal partition walls, as it divides space without needing the strength of a load-bearing wall. - How many hollow blocks are there per square metre?
With a 400 x 200 mm face, there are about 12.5 blocks per square metre before mortar joints. Add a small margin for cuts and wastage when ordering. - How much does a hollow block weigh?
As a guide, normal-weight blocks weigh around 12 to 14 kg for 100mm, 16 to 18 kg for 150mm, and about 20 kg for 200mm. Lightweight versions weigh less.