Brick & Block Calculator UK
Calculate exact mortar, cement & sand needed instantly
Used by 50,000+ UK tradespeople • Updated January 2025
Bricklaying Materials Calculator
Calculate cement, sand and mortar using standard 4:1 ratio
Typical: 10% standard, 5% simple work, 15-20% complex patterns
Calculate Bricks for Your Specific Project
Select your project type for tailored calculations, tips, and guidance:
Garden Walls
Decorative walls, low boundary walls up to 2m
House Extensions
Cavity wall calculations for extensions
Boundary Walls
Property boundaries with pier calculations
Retaining Walls
Structural walls with drainage guidance
Garages
Single & double garage cavity walls
Raised Beds
Garden planters and vegetable beds
BBQ & Outdoor Kitchen
Built-in BBQs and pizza ovens
Chimneys
Chimney stacks and repairs
Piers & Pillars
Gate piers and entrance pillars
Single Skin Walls
Half-brick walls and partitions
Cavity Walls
Full cavity wall construction guide
Decorative Features
Arches, patterns, and feature walls
🧱 Standard Bricklaying Specifications (UK)
- • Standard Bricks (60/m²): 215mm × 102.5mm × 65mm - £0.65/brick avg
- • 140mm Blocks (10.76/m²): 440mm × 215mm × 140mm - £1.90/block avg
- • 100mm Blocks (10.76/m²): 440mm × 215mm × 100mm - £1.50/block avg
- • Mortar ratio: 4:1 (sand:cement) general, 3:1 structural/below DPC
- • Waste factors: 5% simple, 10% standard, 15-20% complex
- • Mortar costs: Cement £6.50/bag, Sand £45/tonne (Q4 2025)
Quick Reference Tables
Bricks Per Linear Metre (by height)
Sand & Cement Per 1000 Bricks
How to Calculate Bricks for Any Project
Accurate brick calculation prevents costly delays from under-ordering or wasted money from over-ordering.
The Basic Formula
Wall Area (m²) × 60 = Number of Bricks. Then add your waste factor (typically 10%).
Example Calculation
Wall: 10m × 2.4m = 24m² → 24 × 60 = 1,440 bricks → +10% waste = 1,584 bricks
Sand: 24 × 40kg = 960kg (≈ 1 tonne) | Cement: 24 × 8kg = 192kg (8 bags)
Choosing the Right Waste Factor
- 5%: Simple rectangular walls, experienced bricklayer
- 10%: Standard projects with corners and openings
- 15%: Complex shapes, decorative patterns
- 20%: Intricate designs, cavity walls, inexperienced bricklayer
Frequently Asked Questions
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