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Last updated: 9 December 2024
Concrete block calculator
Concrete blocks are arguably the most common building material used in the construction of homes in the UK. Why not use of concrete block calculator to help you work out an approximate cost for your project.
As one of the most common materials used in UK building, it is sometimes useful to estimate costs.
If you're intending to build a structure using concrete blocks, a calculator can help you establish a rough price that you could expect to pay.
The popularity of concrete blocks is thanks to their numerous benefits. For example, they are:
Strong
Versatile
Durable
Water / fire resistant
Easy to manufacture
The calculator formula and prices in this article are only a guide. For accurate quotes for costs and the number of concrete blocks you’ll need for a project, we always recommend speaking to local concrete specialists.
Concrete block calculator
The number of concrete blocks you need will vary depending on the project, whether you need them for walls, retaining walls, a new garage, foundations or other building work.
For the purpose of this guide, we are using estimated average costings for concrete blocks per m2.
Enter your floor or wall size (m2):
Choose block size (pick one)
Item | Avg Unit Cost | Your Cost |
|---|---|---|
£22.50 per m² | ||
£54.80 per m² | ||
£35.00 per m² |
Add items (specify quantity of each)
Item | Avg Unit Cost | Your Cost |
|---|---|---|
Block paver day rate | £250.00 each |
Approximate the overall cost would be:
£0.00
Working with professional estimators, we collate cost estimates for the common home improvement and repair jobs in the UK. All the costs are estimates only and for accurate costs for your particular requirements, you are encouraged to reach out to professional tradespeople to receive a quote for your job. Read our disclaimer for more information.
How much do concrete blocks cost?
| Item | Range - Low | Range - High | Average cost |
|---|---|---|---|
| 100mm dense concrete block, each | £2.40 | £3.00 | £2.70 |
| 215mm hollow dense concrete block, each | £4.00 | £5.50 | £4.50 |
| 100mm dense concrete block, 100 pack | £215 | £250 | £225 |
| 215mm hollow dense concrete block, 50 pack | £260 | £300 | £274 |
| 100mm dense concrete block, £/m2 | £21.50 | £25 | £22.50 |
| 215mm hollow dense concrete block, £/m2 | £52 | £60 | £54.80 |
| Last updated: November 2024 Our costs are ballpark averages - get a local tradesperson to quote now | |||
On average, 100mm thick dense concrete blocks cost in the region of £2.40 to £3.00 per block. For a 215mm thick hollow dense concrete block, the average cost is around £4.00 to £5.50 per block.
The exact price you pay for concrete blocks will depend on a number of factors, including:
Type of concrete block
Size
Quantity
Any special treatment
Transport costs
Some concrete block suppliers may offer a discount if you’re ordering a large number of concrete blocks, so it’s worth getting a quote based on actual numbers.
Concrete block calculator formula
To calculate the number of concrete blocks you need, a rough guide is approximately 10 concrete blocks per m2 (including a 10mm mortar joint).
As with any building materials, it’s sensible to calculate how many concrete blocks you think you’ll need and then add a contingency of 10-20% on top of that – to avoid running out.
We also recommend speaking to your local concrete block suppliers about your construction project, to get their professional recommendation on the number of concrete blocks you’ll need.
See the tradespeople we've checked and recommend for your job
Concrete block wall cost calculator
For a concrete block wall, the number of blocks you’ll need and the price you’ll pay will depend on the size of the wall and whether it’s single or double skin.
For a single skin wall, you’ll need approximately 10 concrete blocks per m2. And for a double skin wall, you’ll need roughly 20 concrete blocks per m2.
Benefits of concrete blocks
Here are some of the reasons why concrete blocks have become a solid favourite for construction in the UK:
Strong and durable, and concrete actually gets stronger over time.
Fire-resistant, unlike flammable wooden structures
Excellent insulation to keep your home energy bills down
Available in a variety of shapes, sizes and finishes
Affordable to help your budget go further
Sustainable, so you can be confident knowing you’re choosing an environmentally-friendly building material
Concrete block quotes
We always recommend obtaining at least three quotes from our trusted tradespeople. Our request a quote feature is perfect for getting quotes – you post details about the job you want doing and we’ll send it out to local tradespeople in your area.
See the tradespeople we've checked and recommend for your job
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