Compare calculators

Both calculators run independently — change the inputs on either side to compare results.

Brick Quantity Calculator

Estimate how many bricks you need to cover a wall, dividing total wall area by the face area of one brick. Useful for ordering materials and getting a cost estimate before starting a masonry job.

Wall Length (m)

Wall Height (m)

Brick Size

Construction

Roof Area Calculator

Calculate the true sloped surface area of a roof from its footprint dimensions and pitch angle. The slope multiplier (1/cos(pitch)) corrects for the fact that a pitched roof has more material area than the horizontal footprint it covers.

Roof Length (m)

Roof Width (m)

Roof Pitch (degrees)

Key differences

	Brick Quantity Calculator	Roof Area Calculator
Category	Construction	Construction
Inputs required	3	3
Result	Bricks Needed (pieces)	Roof Surface Area (m²)
What it does	Estimate how many bricks you need to cover a wall, dividing total wall area by the face area of one brick. Useful for ordering materials and getting a cost estimate before starting a masonry job.	Calculate the true sloped surface area of a roof from its footprint dimensions and pitch angle. The slope multiplier (1/cos(pitch)) corrects for the fact that a pitched roof has more material area than the horizontal footprint it covers.