Brick calculator
Enter the length and height of a wall and pick its thickness. See how many bricks it takes, and how much cement and sand the mortar needs.
Free · no sign-up · works on your phone
Also called eent calculator, brick wall calculator or bricks per square foot calculator.
How it is worked out
Each brick takes up its own size plus one mortar joint on three sides. With a 9 × 4½ × 3 inch brick and ⅜ inch joints that is about 11 bricks per cubic foot of wall. Rules of thumb like 13.5 per cubic foot leave the mortar out, so measure your bricks for the best answer.
The rest of the wall is mortar. Dry cement and sand are about 1.33 times the wet mortar, split by the mix; a 50 kg bag of cement is about 1.25 cubic feet. Deduct doors and windows from the wall size yourself.
For 100 square feet of wall (9 × 4½ × 3 inch bricks, ⅜ inch joints, 1:6 mortar, 5% breakage)
| Wall | Bricks | Cement (bags) | Sand (cft) |
|---|---|---|---|
| 4.5″ | 442 | 1.2 | 9 |
| 9.0″ | 883 | 2.4 | 18 |
| 13.5″ | 1,324 | 3.6 | 27 |
Questions
How many bricks in 100 square feet of 9 inch wall?
About 880 with 5% for breakage, using 9 × 4½ × 3 inch bricks and ⅜ inch joints.
Why is my answer lower than 13.5 bricks per cft?
That rule of thumb counts brick volume only. Mortar joints take space too, so fewer bricks fit; change the brick size and joint to match yours.
What mortar mix should I use?
1:6 is common for ordinary walls and 1:4 for stronger or exposed work. Your engineer or mason will say which.
Do I need to subtract doors and windows?
Yes. Enter the wall length and height without openings, or work out the area of openings and reduce the length.
For dealers
Sell bricks by the thousand and sand by the trolley
KeyTup handles bricks, cement, sand and crush on one bill, with loading, unloading and kiraya, and a challan for every trip to the site.