Brick Calculator for Wall
A standard brick wall needs about 7 bricks per square foot, mortar joints included — enter your wall size and this brick calculator for wall projects returns the brick count, with a second mode that sizes mortar bags for block walls.
Sized for standard 8×8×16 inch concrete blocks — about 35 blocks per 80-lb bag of mortar.
Standard modular brick is 3-5/8 × 2-1/4 × 7-5/8 in; with 3/8 in mortar joints plan on about 7 bricks per square foot.
Estimates only. Figures are planning ballparks based on national averages — actual prices vary by region, contractor, and project details. Get 2–3 local quotes before budgeting.
How the brick calculator for wall projects works
Brick counts come from wall area, not volume: multiply length by height, then by the bricks-per-square-foot rate for your brick size. Standard modular bricks with 3/8-inch joints run about 7 per square foot; larger queen and king sizes need fewer.
Block walls flip the question to mortar: an 8×16 inch block face covers 0.89 square feet, so divide wall area by 0.89 for the block count, then allow roughly one 80-lb mortar bag per 35 blocks.
bricks = L × H × rate · order = ⌈bricks × (1 + waste)⌉ · mortar bags = ⌈blocks ÷ 35⌉
Related tools
Keep exploring: Concrete Block Calculator for the block count itself, Concrete Cubic Yard Calculator for footings, and Retaining Wall Cost Calculator if the wall holds back soil.
Brick calculator for wall FAQ
How many bricks do I need per square foot of wall?
About 7 standard modular bricks per square foot with 3/8-inch mortar joints — a 100 sq ft wall needs roughly 700 bricks before waste.
What is the standard brick size?
A standard modular brick is 3-5/8 × 2-1/4 × 7-5/8 inches; with mortar it works on a nominal 4 × 2-2/3 × 8 inch module.
How much mortar do I need per 1,000 bricks?
Roughly six 80-lb bags of mortar per 1,000 modular bricks — buy seven to be safe.
How many concrete blocks are in a square foot?
1.125 — one 8×16 inch block face covers 0.89 square feet.
How many mortar bags do I need for a block wall?
About one 80-lb bag per 35 standard blocks. Mode B above divides your block count by 35 and rounds up.
Should I add waste to my brick order?
Yes — 5% for simple straight walls, 10–15% when there are cuts, corners, arches, or soldier courses.
How does the mortar calculator for block wall mode work?
Enter the same length and height: it counts 8×8×16 blocks at 1.125 per square foot, then divides by about 35 blocks per 80-lb mortar bag and rounds up to whole bags.