砖块
计算墙体所需砖块数量
🧱 Calculate Bricks Needed
📐 计算方法
The brick calculator uses normative values based on standard brick size (250×120×65mm):
Safety Margin: We add 7% extra bricks for cutting waste and breakage.
Standard Size: Calculation assumes standard brick 250mm × 120mm × 65mm with 10mm mortar joints.
About this brick calculator
This brick calculator estimates how many bricks you need to build a masonry wall. Enter the wall length and height, choose the wall thickness in bricks, and subtract the area of any doors or windows. The tool converts your wall into square metres, multiplies by the normative number of bricks per m² for the chosen thickness, and adds a 7% allowance for cutting and breakage so your delivery covers the whole job.
It works for single-skin garden walls, half-brick partitions and thicker load-bearing walls alike, using standard 250 × 120 × 65 mm bricks laid with a 10 mm mortar joint.
🧮 计算示例
Suppose you are building a one-brick wall (25 cm) that is 10 m long and 2.5 m high, with no openings:
- Wall area = 10 m × 2.5 m = 25 m²
- Bricks per m² for a 1-brick wall = 102
- Bricks before waste = 25 × 102 = 2,550
- With 7% waste = 2,550 × 1.07 = ≈ 2,729 bricks
Ordering full packs? Round up to the next pallet and keep the spare bricks for repairs.
💡 Practical tips
- Measure each wall separately and add the areas — gables and returns are easy to forget.
- Always subtract large openings, but ignore very small gaps; the waste margin covers them.
- Order all bricks from the same batch so colour and texture match across the wall.
- Don't forget mortar: roughly one 25 kg bag of mix lays about 50–60 standard bricks.
❓ 常见问题
For standard 250 × 120 × 65 mm bricks with a 10 mm joint there are about 51 bricks per m² in a half-brick wall and 102 per m² in a one-brick wall.
A 5–10% allowance is normal for cuts and breakage. This calculator adds 7% by default, which suits most straight walls.
A half-brick wall (12 cm) is one brick laid on its side; a one-brick wall (25 cm) is the length of a brick. Thicker walls use more bricks per m² because the brick is laid in more rows through the wall.
The brick count already assumes a standard 10 mm mortar joint. Mortar quantity itself is separate — as a guide, a 25 kg bag of mix lays roughly 50–60 bricks.