Brick Mortar Calculator
Bricks, mortar bags and sand for a wall of any size.
Enter your values
Enter the wall length in ft.
Enter the wall height in ft.
Enter the brick length in in.
Enter the brick height in in.
Enter the joint thickness in in.
Enter the price per brick in $.
Results update instantly as you type — no submit needed. Your values are remembered on this device, and the shareable link reopens the calculator with exactly these numbers.
- Bricks needed
- 1,101 (incl. 5% waste)
- Bricks per sq ft
- 6.55
- Mortar bags (70 lb)
- 8
- Sand
- 0.18 cubic yards
- Wall area
- 160 sq ft
- Brick cost
- $715.65
Working
- 1144 / ((8+0.375) x (2.25+0.375)) = 6.55 bricks/ft2
Quick answer
Bricks per square foot depends on brick face size plus joint. Mortar runs about 7 bags of mix per 1,000 standard bricks with 3/8 in joints.
bricks = area / ((brick L + joint) x (brick H + joint) / 144)
At a glance
| What it does | Bricks, mortar bags and sand for a wall of any size. |
|---|---|
| Category | Home & DIY |
| Inputs needed | Wall length, Wall height, Brick length, Brick height, Joint thickness, Price per brick |
| Main output | Bricks needed |
| Formula | bricks = area / ((brick L + joint) x (brick H + joint) / 144) |
| Cost | Free — no sign-up, no download |
How to use the Brick Mortar Calculator
- 1Measure the wall face area and subtract any large openings.
- 2Enter the actual brick face dimensions - modular and queen sizes differ.
- 3Allow 5% waste for cuts, breakage and the odd rejected brick.
Inputs explained
- Wall length(ft)
- Enter the wall length in ft.
- Wall height(ft)
- Enter the wall height in ft.
- Brick length(in)
- Enter the brick length in in.
- Brick height(in)
- Enter the brick height in in.
- Joint thickness(in)
- Enter the joint thickness in in.
- Price per brick($)
- Enter the price per brick in $.
Worked example
Using the values the calculator loads with:
Inputs
- Wall length20 ft
- Wall height8 ft
- Brick length8 in
- Brick height2.25 in
- Joint thickness0.375 in
- Price per brick0.65 $
Results
- Bricks needed1,101 (incl. 5% waste)
- Bricks per sq ft6.55
- Mortar bags (70 lb)8
- Sand0.18 cubic yards
- Wall area160 sq ft
- Brick cost$715.65
- 144 / ((8+0.375) x (2.25+0.375)) = 6.55 bricks/ft2
Frequently asked questions
How many bricks per square foot?
About 6.75 for a standard modular brick with 3/8 inch joints laid in a running bond.
How much mortar do I need?
Roughly 7 bags of mortar mix per 1,000 bricks, more if the joints are wide or the bricks are very absorbent.
What do I need to enter into the Brick Mortar Calculator?
Just 6 values: wall length, wall height, brick length, brick height, joint thickness, price per brick. Every field starts with a realistic example, so you can change one number at a time and watch the result update instantly.
How does the Brick Mortar Calculator work out the answer?
Bricks per square foot depends on brick face size plus joint. Mortar runs about 7 bags of mix per 1,000 standard bricks with 3/8 in joints. It applies the formula bricks = area / ((brick L + joint) x (brick H + joint) / 144) and shows the working so you can check each step by hand.
Is the Brick Mortar Calculator free, and do I need an account?
It is completely free with no sign-up, no download and no usage limit. Everything is calculated in your browser, so the numbers you type never leave your device.
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.