Material calculator
Know your numbers.Build with confidence.
01 UK standard sizes02 Openings & waste03 Free to use
01Building & structureBrick & blockWalls, openings, mortar joints and waste allowance.FEATURED↗02Building & structureConcreteSlabs, footings and pads from volume or dimensions.OPEN↗03Paving & groundworkPaving slabsPatio area, slab quantities, cuts and spare units.OPEN↗04Paving & groundworkGravel & aggregateVolume, weight, bulk bags and coverage depth.OPEN↗05Building & structureMortarDry mix, ready mix and bag estimates for brickwork.OPEN↗06Interiors & finishesPlasterboardBoard counts from walls, ceilings and deductions.OPEN↗07Interiors & finishesPaintLitres and tins by surface area, coverage and coats.OPEN↗08Energy & insulationInsulationBoards or rolls for walls, floors, roofs and lofts.OPEN↗
PROJECT INPUTS · 01–03
Everything you need, in one place.
Enter the wall, brick and order details below. Your estimate updates instantly as you make changes.
01
Wall area
Measure the face of the wall, not its footprint.
02
Brick details
Standard settings use a 10 mm mortar joint.
03
Order allowance
Allow for cuts, damage and on-site changes.
0%10% recommended20%
Transparent by design
The maths stays
visible.
We calculate the usable wall area, divide it by the face area of one brick plus mortar, then add your chosen allowance. That gives you a practical planning quantity—not a black-box promise.
Check another wall01
−Wall area
length × height02
÷Openings
doors + windows03
+Brick module
(L + joint) × (H + joint)04
Order allowance
5–10% typical