Work it out.
Calculators for the masonry trade: count bricks, work out mortar and render, distribute a mix ratio and tally the concrete volume. Enter your own measurements — the result updates live.
Step V — Directory
New to cavity masonry? The guided wizard compiles the entire material list – stone, mortar, binders, plinth tape and frost class – based on your answers in a few steps.
Step A — Pavers
Count bricks: how many per m² with your format and joint — and how many for the whole surface including waste.
Step B — Mortar & render
Work out mortar and render: joint volume, render coat per area and the breakdown of a mix ratio.
Step C — Concrete
Quantify concrete: the volume of a rectangular foundation or a pour, for ordering.
Step D — Execution & material selection
Standards and trade requirements in the execution: wire ties per wall type, bond pattern and frost class for brick selection.
Wall-tie requirement
How many wall ties for the wall?
Course height
How high does one course go — and how many?
Frost-class selector
Which frost-class brick for the location?
Brick bond and course height
How do the stones distribute in your bond?
Roof area, battens and tiles
The roof area along the roof, batten rows and number of roof tiles
Step E — Plot & siting
The house on the plot: distance and height to the boundary under the building right, and the fall of the ground away from the plinth.
Tools that work in all subjects
Maths and templates that work in every trade — and at school. Every tool shows the formula and the working with your own numbers.
- Pythagorasa² + b² = c²Find the missing side, set out a right angle, check whether a room is square, and find the space diagonal.
- Area and perimeterm²Rectangle, triangle, trapezium, circle and composite shapes — area and perimeter.
- Volume and surface aream³ · lBox, cylinder, cone, sphere, pyramid, prism, pipe and frustum — also in litres.
- Percent%Percentage of, how many per cent, percentage change, discount and VAT.
- Scale and ratios1 : 50From drawing to reality, area and volume to scale, the rule of three and dividing in a ratio.
- Unit convertermm ↔ mFrom mm to km, Pa to bar and kB to GB — with the unit staircase.
- Time calculations and the clockt : minTime between two clock times, add time, and 1.75 h = 1 h 45 min for the timesheet.
- Slope and fall% · ° · 1:xFall from level to level, in per cent, per mille, degrees and mm per metre — and the height difference.
- Material consumption including wastem² + %Boards, paint, battens at c/c spacing and packs — for a composite surface or a whole room, with waste.