Wall masonry

Brick, cotileț, shell rock — units, masonry volume and mortar.

Room dimensions

Fill once — we’ll reuse them in this and other calculators.

Length

Width

Height

Doors

pcs

Windows

pcs

Surface area

m²

Subtract openings

m²

Total area of doors and windows that are not covered.

Brick / stone

Wall thickness

½ brick — 120, one brick — 250, wall stone — 190 or 390 mm.

Mortar joint

Reserve

Mortar

“Cement + sand” — mixed on site; “ready mix” — in bags.

Mortar grade

M50 — non-load-bearing; M75–M100 — regular masonry; M150 — loaded.

Mesh reinforcement

Mesh in the bed joint increases wall strength.

Facing (wall ties)

Wall ties connect the facing leaf to the load-bearing wall (≈5 pcs/m²).

Bricks needed

2,693pcs

Masonry volume: 6.5 m³

Mortar: ≈ 1.65 m³ (with 10% reserve)

Mixing water: ≈ 323 l

How the figure is calculated26 m² × 0.25 m = 6.5 m³ of masonry. Brick, single 250×120×65 mm, joint 10 mm ≈ 394 pcs/m³ → 2,564 pcs + 5% = 2,693 pcs. Mortar ≈ 1.65 m³.

Add a reserve for breakage and cuts. The mortar volume is approximate — exact use depends on the joint and mortar grade.

Sources and methodology

GOST 530-2012 — brick sizes
pcs/m³ = 1 / ((L+joint)(W+joint)(H+joint))
Mortar grades M50–M150

Formula version 1.0 · Norms checked 08.2026

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ClientSite

MaterialQty

Brick, single pcs2693

Cement M400 bags17

Sand m³1.82

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Material estimate

Calculator: Wall masonry · Date: · Materia

Input data

Surface area: 30 m²
Subtract openings: 4 m²
Brick / stone: Brick, single
Wall thickness: 250 mm
Mortar joint: 10 mm
Mortar: Cement + sand · M75
Reserve: 5 %

Materials to buy

Item	Quantity	Unit	Note
Brick, single	2693	pcs	incl. 5% reserve
Cement M400	17	bags	≈ 404 kg · M75 mortar
Sand	1.82	m³	≈ 2,730 kg

Calculation

26 m² × 0.25 m = 6.5 m³ of masonry. Brick, single 250×120×65 mm, joint 10 mm ≈ 394 pcs/m³ → 2,564 pcs + 5% = 2,693 pcs. Mortar ≈ 1.65 m³.

The calculation is approximate. Verify consumption against the specific material manufacturer instructions.