Bricks for a 30 ft wall - how many do you need?

    Same wall, two unknowns - how many bricks and how much mortar. Enter the wall dimensions, pick brick type and bond thickness, subtract windows and doors, and get a materials list with bag count.

    Building a 30 foot long brick wall? The brick count depends on the wall height, thickness and joint size. A single-wythe wall at 8 ft tall with standard bricks and 3/8 in joints uses about 6.55 bricks per square foot of face area. Enter your wall height below, pick single or double wythe, choose your brick type and mortar joint width, and the calculator returns the exact count with mortar volume in 60 lb and 80 lb bags.

    Parameters

    Enter data for calculations

    Measure or enter the wall length you plan to build.

    Height from base to top - typically 8-9 ft for interior walls.

    Single wythe = veneer/partition, double = structural, triple+ = heavy load-bearing.

    Standard and cored share dimensions. Modular is slightly smaller for modular coursing.

    Standard is 3/8 in. Use 1/2 in for rustic look or irregular bricks.

    5% for simple walls, 10-15% for walls with many cuts and corners.

    Count windows and doors - openings reduce the total brick count.

    Standard window ~15 sq ft, entry door ~20 sq ft, patio door ~40 sq ft.

    Form progress0 / 6 fields

    💡 Fill in all required fields to unlock the calculate button

    The problem: ordering bricks and mortar by guesswork

    Common mistake: A homeowner orders 500 bricks for a 10 x 8 ft garden wall and runs short halfway through. The second batch arrives in a slightly different shade. The mortar runs out two courses before the top. The wall is finished - but the color mismatch is visible from 30 feet away.
    Solution: This calculator converts wall dimensions, brick type, joint thickness and waste allowance into an exact brick count and mortar volume - so you order everything in one batch, from one pallet, with matched color.

    How to estimate bricks and mortar - step by step

    1. Wall length - measure the full length in feet. For L-shaped walls, add both legs together if the height is the same.
    2. Wall height - measure from the foundation or footing to the top course. Standard garden wall: 3-6 ft. Residential interior: 8-9 ft.
    3. Wall thickness - single wythe (4 in) for veneer and garden walls, double wythe (8 in) for structural walls.
    4. Brick type - standard solid, cored/hollow, clinker or modular. All standard US bricks are 8 x 3.75 x 2.25 in (modular is slightly smaller).
    5. Joint thickness - standard mortar joint is 3/8 in. Thicker joints (1/2 in) use more mortar but fewer bricks.
    6. Waste allowance - 5% for straight runs, 10% for walls with corners and openings, 15% for arches and curves.
    7. Openings - subtract window and door areas. Standard window: ~15 sq ft, entry door: ~20 sq ft.
    8. Read results - brick count, mortar volume in cubic feet, and bag count for both 60 lb and 80 lb mortar bags.

    Bricks per square foot by wall thickness

    Standard US brick (8 x 3.75 x 2.25 in) with 3/8 in mortar joints. Modular brick yields slightly more bricks per sq ft due to its smaller size.

    Wall thickness Wythes Bricks/sq ft (standard) Bricks/sq ft (modular)
    Single wythe (4 in) 1 6.55 6.86
    Double wythe (8 in) 2 13.10 13.72
    Triple wythe (12 in) 3 19.65 20.58

    Mortar coverage by bag size

    Mortar bag Yield (cu ft) Covers (sq ft, single wythe) Covers (bricks, approx.)
    60 lb Type S 0.50 ~8 ~50
    80 lb Type S 0.60 ~10 ~60

    Practical examples

    Example 1: Garden wall 20 x 4 ft, single wythe, standard brick, 3/8 in joints, 5% waste, no openings
    Area: 80 sq ft - 550 bricks - mortar: 5.1 cu ft (11 x 60 lb bags)
    Example 2: House wall 30 x 9 ft, single wythe veneer, clinker brick, 3/8 in joints, 10% waste, 3 windows (15 sq ft each)
    Net area: 225 sq ft - 1,621 bricks - mortar: 14.3 cu ft (29 x 60 lb bags)
    Example 3: Retaining wall 40 x 3 ft, double wythe, standard brick, 1/2 in joints, 10% waste
    Area: 120 sq ft - 1,650 bricks - mortar: 20.9 cu ft (42 x 60 lb bags)
    Example 4: Fireplace surround 6 x 5 ft, single wythe, clinker, 3/8 in joints, 15% waste, 1 opening (6 sq ft firebox)
    Net area: 24 sq ft - 181 bricks - mortar: 1.6 cu ft (4 x 60 lb bags)
    Example 5: Backyard BBQ wall 8 x 3.5 ft, double wythe, standard brick, 3/8 in joints, 10% waste
    Area: 28 sq ft - 404 bricks - mortar: 4.8 cu ft (10 x 60 lb bags)

    Mortar types and where to use them

    Not all mortar is interchangeable. Building codes specify different types depending on the wall's function, exposure and load.

    Type Strength (psi) Where to use
    Type M 2,500 Below grade, retaining walls, foundations
    Type S 1,800 Exterior walls, chimneys, patios
    Type N 750 Above-grade exterior, interior load-bearing
    Type O 350 Interior non-load-bearing, repointing old walls

    When in doubt, use Type S - it covers most residential applications and handles freeze-thaw cycles well. Type M is overkill for above-grade walls and can actually crack softer bricks because it is less flexible.

    Standard vs modular vs clinker brick

    Property Standard solid Cored / hollow Clinker / face
    Weight per brick 4.5 lb 3.5 lb 4.5 lb
    Water absorption 8-15% 10-20% 3-6%
    Compressive strength 3,000-5,000 psi 2,500-4,000 psi 8,000-14,000 psi
    Freeze-thaw resistant Moderate Low Excellent
    Best use Structural walls Interior partitions Facades, driveways

    Clinker bricks are fired at higher temperatures (over 2,000 F) which fuses the clay and makes them nearly waterproof. That low absorption rate is why clinker outperforms standard brick in freeze-thaw climates - water cannot get in to expand and crack.

    FAQ - Frequently asked questions

    How many bricks do I need per square foot of wall?
    For a single-wythe wall with standard US bricks (8 x 3.75 x 2.25 in) and 3/8 in joints, you need about 6.55 bricks per sq ft. Double that for a double-wythe wall. Modular bricks are slightly smaller and require about 6.86 per sq ft.
    What is the difference between Type S and Type N mortar?
    Type S has higher compressive strength (1,800 psi) and is used for below-grade, retaining walls and exterior walls exposed to weather. Type N is softer (750 psi) and better for interior non-load-bearing walls and above-grade veneer. Most residential projects use Type S for safety margin.
    How many 60 lb bags of mortar do I need for 1,000 bricks?
    For a single-wythe wall with 3/8 in joints, 1,000 standard bricks require roughly 10 cu ft of mortar, which is about 20 bags of 60 lb mortar mix. With 1/2 in joints, increase by about 25%.
    Should I use 60 lb or 80 lb mortar bags?
    It depends on the project size. 60 lb bags are easier to handle and mix in small batches - ideal for DIY and small walls. 80 lb bags yield more mortar per bag (0.6 vs 0.5 cu ft) and are more cost-effective for large projects. For a wall needing 20+ cu ft of mortar, 80 lb bags save about 15-20% on cost.
    What is a single wythe vs double wythe brick wall?
    A single wythe is one brick thick (about 4 in) - used for veneer, garden walls and non-structural partitions. A double wythe is two bricks thick (8 in) with mortar or ties between them - used for load-bearing and retaining walls. Most residential brick exteriors are single-wythe veneer over a wood or steel frame.
    Why should I order all bricks from the same batch?
    Clay bricks fired in different kiln runs can vary in color by 2-3 shades. The difference is invisible in the box but obvious on a wall. Always order your full quantity plus waste from the same production lot. If you must mix batches, blend bricks from multiple pallets as you lay them - do not use one pallet at a time.

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    See also

    Bricks for a 8 ft Wall - Count, Mortar and WasteBricks for a 10 ft Wall - Count, Mortar and WasteBricks for a 15 ft Wall - Count, Mortar and WasteBricks for a 20 ft Wall - Count, Mortar and WasteBricks for a 25 ft Wall - Count, Mortar and WasteBricks for a 40 ft Wall - Count, Mortar and WasteBricks for a 50 ft Wall - Count, Mortar and WasteBricks for a 60 ft Wall - Count, Mortar and WasteBricks for a 80 ft Wall - Count, Mortar and Waste

    Calculator verified by the LiczGrupa.pl team

    Content, formulas and results have been reviewed for accuracy and relevance by our team of specialists.

    Krystian Szyszka

    Reviewed by: Krystian Szyszka

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