Drywall Calculator
Estimate how many plasterboard or drywall sheets a wall or ceiling needs, including a cutting allowance.
Construction calculators
Masonry and structure: bricks, blocks, mortar, drywall, reinforcement and foundations. These calculations feed each other — brick work leads to mortar, foundations lead to concrete and rebar.
What you can calculate here
- Brick and block counts including the mortar joint dimension.
- Mortar volume, dry material and cement-to-sand proportions.
- Rebar length and weight, and foundation concrete volume.
Construction calculators
Brick Calculator
Estimate how many bricks a wall needs, taking the mortar joint and wall thickness into account, and see the volume of brickwork involved.
Block Calculator
Estimate block quantities for a wall, whether you are using lightweight concrete blocks, aerated blocks or dense masonry units.
Cement Mortar Calculator
Work out how much cement and sand a mortar mix needs for brickwork or blockwork, based on the wall volume and your ratio.
Rebar Calculator
Estimate how much reinforcement a slab needs: how many bars run each way, the total length to buy and the weight of steel involved.
Foundation Calculator
Estimate the concrete volume for a strip foundation and any slab or pad footings in the same run.
Fence Calculator
Work out the number of posts and panels for a fence run, allowing for gates and a waste margin.
Construction questions
Are these structural calculations?
No. They estimate material quantities only. Bar diameters, spacing, foundation depth and load capacity must be confirmed by a qualified engineer.
Why do brick and block results differ from site practice?
Wastage, breakage, bond patterns and openings vary by site. Treat the result as an order-of-magnitude figure and add your own allowance.