ganak.appBrick Calculator
Free brick calculator. Enter wall dimensions to get exact brick count, mortar bags, sand, weight, and cost. Supports 8 brick sizes, openings, waste factor, and imperial/metric units.
Half Brick (4")
Half Brick (4") · 160 sq ft
Project Summary
Area, materials, weight, and cost at a glance
Brick Breakdown
Step-by-step calculation details
| Item | Value |
|---|---|
| Gross wall area | 160 sq ft |
| Net wall area | 160 sq ft |
| Bricks per sq ft | ~6.9 |
| Base bricks | 1,098 |
| Total Bricks | 1,098 |
Brick Size Reference
Standard US brick types with dimensions and coverage
| Type | L (in) | W (in) | H (in) | per ft² |
|---|---|---|---|---|
| Modular | 7.625 | 3.625 | 2.25 | 6.9 |
| Standard | 8 | 3.75 | 2.25 | 6.6 |
| Queen | 7.625 | 3.125 | 2.75 | 5.8 |
| King | 9.625 | 3.625 | 2.625 | 4.8 |
| Closure | 7.625 | 3.625 | 3.625 | 4.5 |
| Norman | 11.625 | 3.625 | 2.25 | 4.6 |
| Roman | 11.625 | 3.625 | 1.625 | 6 |
| Utility | 11.625 | 3.625 | 3.625 | 3 |
What Is a Brick Calculator?
Overview of the tool and what it helps you estimate.
A brick calculator estimates how many bricks you need for a wall using the wall area, brick dimensions, mortar joint thickness, and waste factor — so you buy the right quantity without running short or overspending.
~6.9
bricks / sq ft
Modular with ⅜" mortar
⅜"
mortar joint
Standard thickness
5–10%
waste factor
Cuts & breakage
Brick Calculation Formulas
Core formulas used for brick count and material estimation.
Step 1.Net wall area
Step 2.Brick face area
Step 3.Bricks needed
⌈⌉ means round up — it's better to have a few extra bricks than to run short mid-project.
Bricks Per Square Foot by Type
How brick size affects the number needed per square foot.
Modular
7.625 × 3.625 × 2.25″
Standard
8 × 3.75 × 2.25″
Queen
7.625 × 3.125 × 2.75″
King
9.625 × 3.625 × 2.625″
Closure
7.625 × 3.625 × 3.625″
Norman
11.625 × 3.625 × 2.25″
Roman
11.625 × 3.625 × 1.625″
Utility
11.625 × 3.625 × 3.625″
All rates assume ⅜″ mortar joint for a single-wythe (half brick) wall.
Brick Calculator Examples
Sample projects with brick count calculated.
Garden Wall
~290
bricks
10 × 4 ft, half brick
No openings · Modular · 5% waste
Single Room Wall
~1,008
bricks
20 × 8 ft, half brick
1 door (3×7 ft) · Modular · 5% waste
Double Brick Partition
~1,700
bricks
15 × 10 ft, single brick
1 door · 1 window · Standard · 10% waste
Full House Exterior
~12,500
bricks (multiple walls)
4 walls totaling 120 × 9 ft
3 doors · 8 windows · Single brick · 10% waste
Common Mistakes to Avoid
Quick checklist to prevent ordering the wrong amount.
Forgetting mortar joints — each brick face area must include the mortar gap or you'll over-estimate by 10–15%.
Skipping waste factor — bricks break during transport and cutting. Always add 5–10%.
Ignoring openings — doors and windows can account for 15–25% of wall area.
Wrong wall thickness — a single brick wall uses 2× the bricks of a half brick wall.
Not checking foundation capacity — a 20 ft × 8 ft single brick wall weighs over 2 tons.
Buying from different batches — bricks may vary in shade. Order all at once.
Pro Tips for Buying Bricks
Practical advice for accurate brick estimates and better results.
Order 5–10% extra and keep leftovers — matching old bricks exactly is nearly impossible once a batch is sold out.
A standard pallet holds about 500 modular bricks. Divide your total by 500 for pallet ordering.
Lay a test section dry (no mortar) to check pattern and color before committing to the full wall.
Check your foundation can support the wall weight before starting — brick walls are heavy.
Measure mortar joints from the actual brick — tolerances vary. A ⅛" difference changes coverage by 5%.
For fire pits and patios, use a paver calculator instead — pavers are laid flat without mortar joints.
Frequently Asked Questions
Common questions about brick calculation and quantity