Calculation of the number of blocks Construction

Block calculator

Calculation of the number of blocks for building a wall

Specify the dimensions of the wall (length and height)
to calculate the volume of materials
Total you will need (with reserve):
0 pcs
Block size by facade -
Blocks in one row -
Number of rows -
Net quantity (without stock) -
💡 Wall area: 0 m²
*Calculation was carried out taking into account the thickness of the mortar joint.

Calculation of the number of blocks

🏗️ Calculation of the volume of concrete for the foundation and screed

This calculator helps you determine exactly how many cubic meters of mixture (m³) to order at the factory. An error in calculations is costly: either you overpay for an extra mixer, or there is not enough concrete to complete the monolith, which is critical for strength.

💡 Foreman's advice: Concrete is always ordered in excess. Part of the mixture remains in the concrete pump, while part shrinks during vibratory placement. We recommend adding 5–10% to the calculated volume.

How to choose a calculation type?

  • 🧱 Strip foundation: Choose this type if you plan to fill the contour under load-bearing walls. If you have not yet calculated materials for walls, we recommend our building block calculator.
  • ⬛ Slab (Screed): Ideal for calculating floors, ceilings or flat foundations. It works according to the formula: Area (m²) × Thickness (m).
  • 🏛️ Column / Pile: For round supports and bored piles. You need to know the height and diameter.

Frequently asked questions (FAQ)

🔹 How to convert liters or kilograms to cubes (m³)?

Concrete plants ship products strictly in cubic meters. The weight of 1 cube depends on the brand of concrete (usually 2300–2500 kg). Our volume calculator gives the result immediately in m³, so that it is convenient for you to place an order.

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🔹 Is it possible to use a calculator to calculate mortar for masonry?

No, this tool calculates the volume of a monolithic fill. The consumption of mortar for laying bricks or blocks is calculated differently (usually 0.2–0.3 m³ per cube of masonry).

🔹 What is the “compression factor”?

When pouring, concrete is compacted with a vibrator, expelling air. The volume of the mixture decreases. For an accurate order, we recommend multiplying the result by a factor of 1.05 (that is, adding 5%).

Calculators