Brick and mortar quantity calculator

Estimate the number of bricks and the cement and sand for mortar for a wall, from its length, height and thickness.

Formulas reviewed by Sumit Kumar Sinha on 11 October 2026

How many bricks for a 10 × 10 ft wall?

A 10 ft × 10 ft wall, 9 inches thick, built with traditional bricks and 1:6 mortar needs about 968 bricks including 5% wastage, and about 2.7 bags of cement and 0.56 m³ of sand for the mortar. Enter your own wall above to get your numbers.

How is the quantity worked out?

The calculator takes the wall area, subtracts the doors and windows, and multiplies by the wall thickness to get the volume of brickwork. It divides that by the volume of one brick including its mortar joint to get the number of bricks. The space left after the bricks themselves is wet mortar, which is multiplied by 1.27 for dry materials and split by the cement : sand ratio.

What does it assume?

• Brick sizes as listed, with 10 mm mortar joints.
• A dry-to-wet mortar factor of 1.27 and a 50 kg cement bag.
• Enter the thickness of the brickwork only, for example 4.5 inches (115 mm) for a half-brick wall or 9 inches (230 mm) for a full-brick wall.
• The wastage you enter is added to both the bricks and the mortar. Plaster, and the cement and sand for it, are not included.

Sources

• IS 1077, Common Burnt Clay Building Bricks (modular size 190 × 90 × 90 mm).
• The traditional brick size and the 1.27 dry-to-wet mortar factor are common Indian estimating conventions, not clauses of the Standard.

General information only. It is not a structural design or professional advice. Ask a licensed structural engineer or architect to check your plans and site.