Brick Calculator
Your estimate
- Bricks per ft² / m²
- 6.86
- Net wall area
- 240 ft²26.67 yd² · 22.3 m²
- Mortar
- 14.6 ft³0.54 yd³ · 0.413 m³
For brick walls, veneer and garden walls — US, UK and European brick sizes with your joint width.
Updated 2026-10-20 · Based on: standard block, brick and paver sizes with their mortar joints.
How to use the Brick Calculator
- Enter the wall length and height.
- Choose the brick size and mortar joint (⅜ in or 10 mm is standard).
- Subtract the area of doors and windows.
- Read bricks (with 5 % extra) and mortar.
Formula
Bricks per area = 1 ÷ ((brick length + joint) × (brick height + joint)).
A US modular brick (7⅝ × 2¼ in) with a ⅜ in joint gives 6.86 bricks per ft²; a UK brick (215 × 65 mm) with 10 mm joints gives 59.3 per m².
Worked example
With the values preset in the calculator above:
- Length
- 30 ft
- Height
- 8 ft
- Brick size
- Modular 7⅝ × 2¼ in
- Joint width
- 0.375 in
- Doors & windows (area)
- 0 ft²
- Extra for waste
- 5 %
- Mortar bag
- 80 lb bags
- Bricks (with waste)
- 1,728
- Bricks per ft² / m²
- 6.86
- Net wall area
- 240 ft² (26.67 yd²)
- Mortar
- 14.6 ft³ (0.54 yd³)
- Mortar bags
- 22
How many bricks per square foot?
- Modular (7⅝ × 2¼ in): 6.86 per ft²
- Standard (8 × 2¼ in): about 6.55 per ft²
- Queen (7⅝ × 2¾ in): about 5.8 per ft²
- UK 215 × 65 mm: 59.3 per m²
- German NF 240 × 71 mm: about 48 per m² (single skin)
Frequently asked questions
How many bricks for a 10 × 8 ft wall?
An 80 ft² wall of modular brick takes about 576 bricks including 5 % extra.
How much mortar do I need for 1,000 bricks?
About 8 ft³ of mortar for 1,000 modular bricks with ⅜ in joints — about 14 bags of 80 lb mortar mix including 10 % for droppings.
Why add 5 % extra bricks?
Bricks break during cutting and delivery, and later repairs are easier with bricks from the same batch.
More calculators
Estimates only — check quantities with your supplier and local building code before you order.