Brick Wall Calculator – Bricks, Cement & Sand

How to interpret this estimate

Uses the legacy brick adjustment factor 0.94921875, dry-mortar allowance 33% of wall volume and cement density 1,440 kg/m³. Costs use your entered unit prices; no currency conversion is performed.

This tool supports preliminary quantity planning. Mix design, structural suitability, site waste, joint dimensions and actual purchasing quantities need project-specific confirmation. Labour, delivery, taxes and other materials are not included.

Calculation details and examples · Discuss a custom calculator

How to use the brick wall calculator

1. Choose Feet or Meters before entering dimensions.
2. Enter wall length, height and thickness. Thickness uses inches in feet mode and millimetres in metric mode.
3. Enter total window and door area in square feet or square metres.
4. Check brick dimensions, cement bag weight and cement:sand ratio.
5. Optionally enter brick and bag prices, then select Calculate.

Brick calculator features

• Feet/inch and metre/millimetre input modes.
• Window and door area deductions from gross wall area.
• Custom brick length, width and thickness.
• Adjustable cement bag weight and mortar ratio.
• Whole-brick estimate, cement bags, sand and wall volume.
• Brick and cement costs using entered prices.
• Validation for dimensions, openings, prices and bag weight.
• Responsive form and results that reset when switching unit mode.

Worked brick estimate: a 3 metre wall

Use a wall 3 m long, 2 m high and 100 mm thick, deduct 1 m² of openings, and enter bricks 200 × 100 × 50 mm. Net wall volume is 0.5 m³. The legacy brick adjustment gives 475 whole bricks. A 1:5 mortar ratio and 50 kg bag give 0.792 cement bags and 0.1375 m³ sand, displayed as 0.138 m³.

With a brick price of 2 and a cement bag price of 10, the displayed costs are 950 and 7.92. These are in your price currency; the calculator does not convert currencies.

Brick wall calculation questions

How are windows and doors deducted?

The total opening area is subtracted from length multiplied by height, before multiplying by wall thickness. Openings must be smaller than the gross wall area.

Are mortar joints calculated geometrically?

No. This version retains a legacy brick adjustment factor of 0.94921875 and dry mortar allowance of 33% of net wall volume. Joint thickness and bond are not configurable, so confirm suitability for the actual wall.

Why can the feet and metre presets differ?

The default brick sizes are rounded separately. Enter exact converted dimensions to compare equivalent inputs; both paths use the same mortar factor and cement-density assumption.

Is the cost result a complete project quotation?

No. It includes the entered brick and cement prices only. Sand cost, labour, delivery, taxes, waste and other materials are outside the calculation. Cement bag output is fractional; purchase rounding remains your decision.

Example screenshot

The image shows a real browser calculation using the example above.

Source code and documentation · Concrete calculator