Brick and block calculator
Count the bricks or blocks for a wall, the pallets to order and the mortar or thin-bed adhesive. Windows and doors are taken out, the joint is counted, and a thicker wall gets several bricks across.
You need
2,763 pcs
6 pallets · 500 pcs per pallet
- Per 1 m²
- 118.5 pcs
- Mortar
- 1.07 m³
- Walls without windows and doors10.00 × 2.80 − 5.80 = 22.20 m²
- Units per 1 m² with 10 mm joints2 ÷ ((215 + 10) × (65 + 10)) mm = 118.5 pcs
- Units + 5 % reserve22.20 × 118.5 × 1.05 → 2,763 pcs
- Pallets of 5002,763 ÷ 500 → 6 pallets
- Mortar: the wall minus the bricks + 5 %(4.773 − 3.751) × 1.05 = 1.074 m³
Consumption is the average from the «United Kingdom, Ireland, Australia and New Zealand» preset. Check it against your manufacturer's pack.
The calculator gives an estimate by the usual norms. Consumption depends on the product and the surface: check the manufacturer’s data before you buy.
How it’s calculated
- 1
Wall area = length × height minus windows and doors.
- 2
One brick with its joint takes (l + s) × (h + s) of the wall face; a wall of 1 brick and more has several bricks across its thickness.
- 3
Bricks per m² = bricks across ÷ face of one brick with its joint.
- 4
Bricks = area × bricks per m², plus a 5 % reserve, rounded up; pallets = bricks ÷ bricks on a pallet.
- 5
Mortar = volume of the wall minus the volume of the bricks; aerated blocks are laid on adhesive, counted per m³ of wall.
Worked example
A wall 10 m long and 2.8 m high with two windows and one door:
The input
- Length of walls, m
- 10
- Height, m
- 2.8
- Windows
- 2
- Doors
- 1
- Brick or block
- UK brick 215 × 102.5 × 65
- Wall thickness
- 1 brick · 215 mm
The result
2,763 pcs
6 pallets · 500 pcs per pallet
- Per 1 m²: 118.5 pcs
- Mortar: 1.07 m³
The calculation
- Walls without windows and doors10.00 × 2.80 − 5.80 = 22.20 m²
- Units per 1 m² with 10 mm joints2 ÷ ((215 + 10) × (65 + 10)) mm = 118.5 pcs
- Units + 5 % reserve22.20 × 118.5 × 1.05 → 2,763 pcs
- Pallets of 5002,763 ÷ 500 → 6 pallets
- Mortar: the wall minus the bricks + 5 %(4.773 − 3.751) × 1.05 = 1.074 m³
How many bricks per square metre?
With a 10 mm joint a 250 × 65 mm face brick takes 51 bricks per m² of a half-brick wall and 103 of a one-brick wall. A UK brick of 215 × 65 mm takes 59 per m² of a half-brick wall; an aerated block of 600 × 200 mm on a 3 mm joint, about 8 per m².
How much mortar for a brick wall?
Mortar fills what the bricks don’t: the volume of the wall minus the bricks. For a one-brick wall of ordinary bricks that is roughly a fifth to a quarter of the wall volume.
Questions
What does “half-brick” and “one-brick” wall mean?
The wall thickness in bricks: half-brick is one brick laid along the wall, one-brick is the brick’s length across, and so on. The calculator offers the thicknesses that fit the chosen brick.
Are windows and doors subtracted?
Yes, at their usual sizes. If you know the net wall area, type it in.
Why a 5 % reserve?
Some bricks break in transport and when cut at corners and openings. For bricks with a visible face buy from one batch, with the reserve.
The same calculator in the Kvadrino app
Kvadrino for Android works offline: enter the room once and get tiles, paint, flooring and an estimate for the client. The app is in closed testing — write to us and we will add you as a tester.
Coming soon to Google Play